Article (Scientific journals)
BeAMS: a Beacon based Angle Measurement Sensor for mobile robot positioning
Pierlot, Vincent; Van Droogenbroeck, Marc
2014In IEEE Transactions on Robotics, 30 (30), p. 533-549
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BeAMS: a Beacon based Angle Measurement Sensor for mobile robot positioning
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Keywords :
Angle measurement; beacons; infrared detector; mobile robot; robot sensing system; positioning; triangulation; robot
Abstract :
[en] Positioning is a fundamental issue in mobile robot applications, and it can be achieved in multiple ways. Among these methods, triangulation based on angle measurements is widely used, robust, accurate, and flexible. This paper presents BeAMS, a new active beacon-based angle measurement system used for mobile robot positioning. BeAMS introduces several major innovations. One innovation is the use of a unique unsynchronized channel with On-Off Keying modulated infrared signals to measure angles and to identify the beacons. We also introduce a new mechanism to measure angles: our system detects a beacon when it enters and leaves an angular window. We show that the estimator resulting from the center of this angular window provides an unbiased estimate of the beacon angle. A theoretical framework for a thorough performance analysis of BeAMS is provided. We establish the upper bound of the variance and validate this bound through experiments and simulations; the overall error measure of BeAMS is lower than 0.24 deg for an acquisition rate of 10 Hz. In conclusion, BeAMS is a low power, flexible, and robust solution for angle measurement, and a reliable component for robot positioning.
Research center :
Intelsig
Telecommunications and Imaging Laboratory (TELIM)
Disciplines :
Computer science
Author, co-author :
Pierlot, Vincent ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Dép. d'électric., électron. et informat. (Inst.Montefiore)
Van Droogenbroeck, Marc  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Télécommunications
Language :
English
Title :
BeAMS: a Beacon based Angle Measurement Sensor for mobile robot positioning
Publication date :
June 2014
Journal title :
IEEE Transactions on Robotics
ISSN :
1552-3098
Publisher :
IEEE, Piscataway, United States - New Jersey
Volume :
30
Issue :
30
Pages :
533-549
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 July 2013

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