The iLoc ultrasound indoor localization system at the EvAAL 2011 competition

Abstract

iLoc is an ultrasound ranging based indoor localization system which is deployed at the iHomeLab laboratory. For example, the system can be used for visitor tracking: Visitors get an electronic name badge comprising an ultrasound transmitter. This badge can be localized with an average accuracy of less than 10 cm deviation in its spatial position, by means of reference nodes distributed in the lab rooms. Depending on the position update rate, a small battery may suffice for several month of tag operation. Other advantages when compared to existing ultrasound ranging systems (like CRICKET, CALMARI, BAT) are for example the simple deployment with its 2 wire "IPoK" bus system. In this paper we report on the system itself and on the participating of iLoc at the first EvAAL indoor localization competition. © 2012 Springer-Verlag.