InfiniWolf: Energy Efficient Smart Bracelet for Edge Computing with Dual Source Energy Harvesting
Abstract
This work presents InfiniWolf, a novel multi-sensor smartwatch that can achieve self-sustainability exploiting thermal and solar energy harvesting, performing computationally high demanding tasks. The smartwatch embeds both a System-on-Chip (SoC) with an ARM Cortex-M processor and Bluetooth Low Energy (BLE) and Mr. Wolf, an open-hardware RISC-V based parallel ultra-low-power processor that boosts the processing capabilities on board by more than one order of magnitude, while also increasing energy efficiency. We demonstrate its functionality based on a sample application scenario performing stress detection with multi-layer artificial neural networks on a wearable multi-sensor bracelet. Experimental results show the benefits in terms of energy efficiency and latency of Mr. Wolf over an ARM Cortex-M4F micro-controllers and the possibility, under specific assumptions, to be self-sustainable using thermal and solar energy harvesting while performing up to 24 stress classifications per minute in indoor conditions. © 2020 EDAA. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000425919Publication status
publishedExternal links
Book title
2020 Design, Automation and Test in Europe Conference and Exhibition (DATE)Pages / Article No.
Publisher
IEEEEvent
Subject
Energy harvesting; Biomedical aplications; Wearable devicesOrganisational unit
03996 - Benini, Luca / Benini, Luca
Notes
Due to the Corona virus (COVID-19) the conference was conducted virtually.More
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