Selected Publications
Madhup Chandra, Mark Jones, and Thomas Martin, "E-Textiles for Autonomous Location Awareness", Proceedings of the Eighth International Symposium on Wearable Computers, ISWC 2004, Arlington, VA, Nov 2004.
Abstract:
In this paper, we describe an autonomous, wearable electronic textile location awareness system that will determine a user's location within a building given a map of that building. The system uses a moderate number of ultrasonic range transceivers as the sensing elements. Given a set of range readings from these sensors, the system attempts to match those actual readings to expected readings associated with a set of candidate locations for the wearer. These expected readings are calculated using a simulation model of the propagation of ultrasonic signals within a building. An additional algorithm is given for determining the wearer's movement between rooms, allowing for the uncertainty associated with sensor readings in complex, multi-room environments. A wearable prototype system is described and results from this system in a variety of situations are presented.
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