Sensors & Transducers Journal
(ISSN 1726- 5479)
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205.767 |
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(ISSN 1726- 5479) |
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Sensors & Transducers Journal 2011 Sensors & Transducers Journal 2010 Sensors & Transducers Journal 2009 Sensors & Transducers Journal 2008 Sensors & Transducers Journal 2007 |
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Vol. 14-2, Special Issue, March 2012, pp.211-227
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Embedded Wireless System for Pedestrian Localization in Indoor Environments
1 Nicolas FOURTY, 2 Yoann CHARLON, 2 Eric CAMPO 1 LCIS, Grenoble-INP, Université Pierre Mendès France 50, rue Barthélémy de Laffemas - BP54 – F-26902 VALENCE Cedex 09, France Tel.: +33 475 759 449 2 CNRS, LAAS, 7 avenue du Colonel Roche, F-31077 Toulouse Cedex 4, France Université de Toulouse; UPS, INSA, INP, ISAE, UT1, UTM, LAAS; F-31077 Toulouse Cedex 4 E-mail: nicolas.fourty@iut-valence.fr, charlon@laas.fr, campo@laas.fr
Received: 15 November 2011 /Accepted: 20 December 2011 /Published: 12 March 2012 |
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Abstract: The paper presents an embedded telemetry system used in combination of localization algorithm for a precise indoor pedestrian localization. The system is based on the association of two wireless technologies: ultrasonic and 802.15.4. The novelty is the use of 802.15.4 RF signal to give the reference starting time of the ultrasonic emission. A ToA (Time of Arrival) measurement provides the distance between two mobiles or a mobile and a fixed beacon with a few centimeters accuracy. A material prototype implementing this method was performed and a first evaluation of energy consumption and packet error rate was conducted.
Keywords: Wireless sensors, Telemetry, Low power, Ultrasonic, Localization, 802.15.4
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