TY - GEN
T1 - Field experiments of an automated materials identification and localization model
AU - Torrent, David Grau
AU - Caldas, Carlos H.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - This study assesses the reliability of active radio frequency identification devices (RFID) and Global Positioning System (GPS) sensors that, when combined with localization algorithms, can be used to locate tagged materials in construction sites. Specifically, this paper presents experiments used to assess the deviations from materials' actual positions to their estimated locations according to both centroid-based and proximity-based algorithms. The authors also analyze these deviations when considering only RFID signals with strengths stronger than certain threshold values. The results of this research also suggest that it is possible to infer relative distances from RFID-sensors to tagged-materials according to signal strength characteristics. Field experiments simulating typical construction conditions are used for testing this approach.
AB - This study assesses the reliability of active radio frequency identification devices (RFID) and Global Positioning System (GPS) sensors that, when combined with localization algorithms, can be used to locate tagged materials in construction sites. Specifically, this paper presents experiments used to assess the deviations from materials' actual positions to their estimated locations according to both centroid-based and proximity-based algorithms. The authors also analyze these deviations when considering only RFID signals with strengths stronger than certain threshold values. The results of this research also suggest that it is possible to infer relative distances from RFID-sensors to tagged-materials according to signal strength characteristics. Field experiments simulating typical construction conditions are used for testing this approach.
UR - http://www.scopus.com/inward/record.url?scp=78649327916&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649327916&partnerID=8YFLogxK
U2 - 10.1061/40937(261)82
DO - 10.1061/40937(261)82
M3 - Conference contribution
AN - SCOPUS:78649327916
SN - 0784409374
SN - 9780784409374
T3 - Congress on Computing in Civil Engineering, Proceedings
SP - 689
EP - 696
BT - Computing in Civil Engineering - Proceedings of the 2007 ASCE International Workshop on Computing in Civil Engineering
T2 - 2007 ASCE International Workshop on Computing in Civil Engineering
Y2 - 24 July 2007 through 27 July 2007
ER -