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Effect of Beacon Orientation on Beacon Placement Strategies in the Ultrasonic Positioning System
Dai, B.1; Fu, Q.2; Neville K.S.Lee3

Ultrasonic positioning system (UPS) is useful in warehouse and underwater applications to track automated objects. One of the key factors determining the performance of the UPS is the beacon placement. Existing literatures are restricted to placing beacons perpendicularly downward to the target moving plane. In this study, considering three common placement patterns: triangle, square and hexagon, by relaxing beacon orientation, our analysis shows that hexagon placement is the best option, and the improvement in terms of qualified coverage per beacon has a negative relationship with the beacon height. Even conditioning on a height of 20% of the sensing range, a factor of 8 and 7 can be achieved in the non-regular placement and regular placement, respectively. Furthermore, critical heights which differentiate the non-perpendicular placement (NPP) and perpendicular placement (PP) for all patterns are identified. In general, regular NPP with the hexagon pattern is advised. In addition, our analysis investigates the advantage of increasing the cone angle by clustering which groups transducers by relaxing transducer orientation, and result shows that continuous clustering of seven transducers has the largest marginal contribution of 24% and 41% to improve the qualified coverage in the non-regular NPP with hexagon placement and regular PP, respectively. Finally, considering the beacon clustering cost and the beacon station cost, the economic beacon placement strategies are identified for applications with different clustering cost and beacon height.

KeywordBeacon Orientation Non-perpendicular Placement Multiple Transducers Clustering Ultrasonic Positioning System
Indexed BySSCI ; SSCI
WOS Research AreaAutomation & Control Systems ; Robotics ; Computer Science
WOS SubjectAutomation & Control Systems ; Computer Science, Artificial Intelligence ; Robotics
WOS IDWOS:000318962500008
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Document TypeJournal article
CollectionFaculty of Business Administration
Affiliation1.Wuhan Univ, Sch Econ & Management, Wuhan 430072, Hubei, Peoples R China
2.Univ Macau, Fac Business Adm, Dept Accounting & Informat Management, Taipa, Peoples R China
3.Hong Kong Univ Sci & Technol, Dept Ind Engn & Logist Management, Kowloon, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Dai, B.,Fu, Q.,Neville K.S.Lee. Effect of Beacon Orientation on Beacon Placement Strategies in the Ultrasonic Positioning System[J]. ROBOTICS AND AUTONOMOUS SYSTEMS,2013,61(6):648-658.
APA Dai, B.,Fu, Q.,&Neville K.S.Lee.(2013).Effect of Beacon Orientation on Beacon Placement Strategies in the Ultrasonic Positioning System.ROBOTICS AND AUTONOMOUS SYSTEMS,61(6),648-658.
MLA Dai, B.,et al."Effect of Beacon Orientation on Beacon Placement Strategies in the Ultrasonic Positioning System".ROBOTICS AND AUTONOMOUS SYSTEMS 61.6(2013):648-658.
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