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Issue No.04 - April (2007 vol.6)
pp: 367-380
This paper describes an autonomous, wearable location awareness system that determines 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. A complementary algorithm is given for determining the wearer's movement between rooms, allowing for the uncertainty associated with sensor readings in complex, multiroom environments. A wearable prototype system is described and results from this system in a range of scenarios are presented and analyzed.
Electronic textiles, e-textiles, wearable computing, location awareness, context awareness.
Madhup Chandra, Mark T. Jones, Thomas L. Martin, "E-Textiles for Autonomous Location Awareness", IEEE Transactions on Mobile Computing, vol.6, no. 4, pp. 367-380, April 2007, doi:10.1109/TMC.2007.51
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