On-demand Linux for Power-aware Embedded Sensors

Carl Worth, Mike Bajura, Jaroslav Flidr, and Brian Schott
Information Sciences Institute, USC


We introduce a distributed sensor architecture which enables high-performance 32-bit Linux capabilities to be embedded in a sensor which operates at the average power overhead of a small microcontroller. Adapting Linux to this architecture places increased emphasis on the performance of the Linux power-up/shutdown and suspend/resume cycles.

Our reference hardware implementation is described in detail. An acoustic beamforming application demonstrates a 4X power improvement over a centralized architecture.

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Presented at the 2003 Ottawa Linux Symposium in July, 2003.

Carl Worth
Last modified: Tue Jul 27 EDT 2004