Qixin Wang, University of Illinois at Urbana-Champaign
Rong Zheng, University of Illinois at Urbana-Champaign
Xue Liu, University of Illinois at Urbana-Champaign
Lui Sha, University of Illinois at Urbana-Champaign
Acoustic awareness is an important service in ubiquitous computing environments. This paper presents a fast lightweight acoustic event localization protocol, the Lightning protocol, t o locate impulsive sound sound using arrays of wireless micro-sensors. This protocol utilizes domain-invariant knowledge of acoustic and electromagnetic wave propagation to efficiently reduce the number of contending sensors in the localization process. It incurs 0(1) transmissions irrespective of sensor density and guarantees time delay in localization. Experiment results Using UC Berkeley Motes demonstrate that the time delay f o r Lightning Protocol to locate hand clap sounds is in terms of milliseconds.
Citation:
Qixin Wang, Rong Zheng, Ajay Tirumala, Xue Liu, Lui Sha, "Lightning: A Fast and Lightweight Acoustic Localization Protocol Using Low-End Wireless Micro-Sensors," rtss, pp.371-381, 25th IEEE International Real-Time Systems Symposium (RTSS'04), 2004