Bluetooth-based Indoor Proximity Sensing for Nursing Context Awareness

Authors:
Futoshi Naya;Haruo Noma;Ren Ohmura;Kiyoshi Kogure
Affiliations:
ATR Intelligent Robotics and Communication Laboratory 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, JAPAN;ATR Intelligent Robotics and Communication Laboratory 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, JAPAN;ATR Intelligent Robotics and Communication Laboratory 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, JAPAN;ATR Intelligent Robotics and Communication Laboratory 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, JAPAN
Venue:
ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
Year:
2005

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Abstract

This paper proposes a Bluetooth-based indoor proximity detection method for nursing context awareness. We exploit proximity between Bluetooth devices attached to people and objects for estimating 1) room-level proximity of people and objects, and 2) mutual proximity between moving people and objects. We show that the proximity information exchanged between several devices can be updated at a rate of more than 1 Hz by effectively choosing the timing parameters of Bluetooth inquiry mechanism. Empirical results of evaluating the Receiver Signal Strength Indicator (RSSI) at various distances between devices are also shown.