BrainWave: an energy-efficient EEG monitoring system - evaluation and trade-offs

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This paper presents the design and evaluation of an energy-efficient seizure detection system for emerging EEG-based monitoring applications, such as non-convulsive epileptic seizure detection and Freezing-of-Gait (FoG) detection. As part of the BrainWave system, a BrainWave processor for flexible and energy-efficient signal processing is designed. The key system design parameters, including algorithmic optimizations, feature offloading and near-Threshold computing are evaluated in this work. The BrainWave processor is evaluated while executing a complex EEG-based epileptic seizure detection algorithm. In a 28-nm FDSOI technology, 325 μJ per classification at 0.9 V and 290 μJ at 0.5 V are achieved using an optimized software-only implementation. By leveraging a Coarse-Grained Reconfigurable Array (CGRA), 160 μJ and 135 μJ are obtained, respectively, while maintaining a high level of flexibility. Near-Threshold computing combined with CGRA acceleration leads to an energy reduction of up to 59%, or 55% including idle-Time overhead.

Originele taal-2Engels
TitelProceedings of the ACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED 2020
SubtitelISLPED '20
Aantal pagina's6
ISBN van elektronische versie9781450370530
StatusGepubliceerd - 10 aug 2020

Publicatie series

NaamACM International Conference Proceeding Series

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