ETH-PBL / H-Watch

Smart Watch for Healthcare
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H-Watch

Smart Watch for Healthcare
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Table of Contents

About The Project

The H-Watch is a fully open-sourde wearable long-lasting smart monitoring platform for health monitoring and tracking. Thanks to the integrated state-of-the-art NB-IoT cellular technology, it provides direct and secure cloud connectivity. It is based on widely available off-the-shelf components; however, it is designed with low-power and on-board intelligence in mind. Experimentalresults demonstrated only 5.9 mW of average power consumption, leading to a lifetime of 9 days on a small watch battery wothout, and up to 20 days with the solarenergy harvester.

Hardware

Components

The H-Watch is a highly integrated multi-sensor wearable platform which is built of the key components, listed below:

The H-Watchs housing, as well as its energy-saving memory LCD display, was taken from the Matrix Power Watch series 1.

PCB

The H-Watchs printed circuit board (PCB) is built of 6 Layers with a total board thichness of only 0.83mm. Further informations about the PCB can be found here:

File Content
H-Watch_schematics.pdf Schematics of the H-Watch.
H-Watch_connectors.pdf Description of the position and functionality of all connectors and test pionts.
H-Watch_assembly.pdf Assembly drawings of the top- and bottom-side of the PCB.
H-Watch_manufacturing.pdf Detailed fabrication information about the exansion board; thickness, dimensions and defined layer stack.
H-Watch_layers.pdf Routing overview of all six copper layers.
H-Watch_3D.pdf 3D model of the H-Watches hardware
H-Watch_complete_documentation.pdf The complete documentation contains all files above, excluding the 3D-PDF

The latest Altium files of of the PCB can be found here

Getting Started

Software

Installation

Acknowledges

The authors recognise and thank the European Open Science Cloud (EOSC) for financial support under COVID-19 research to open access grant agreements. EOSCsecretariat.eu has received funding from the European Union's Horizon Programme call H2020-INFRAEOSC-05-2018-2019, grant Agreement number 831644.

If you use H-Watch in an academic or industrial context, please cite the following publications:

@INPROCEEDINGS{20.500.11850/476189,
    copyright = {Creative Commons Attribution 4.0 International},
    year = {2021-05-22},
    author = {Polonelli, Tommaso and Schulthess, Lukas and Mayer, Philipp and Magno, Michele and Benini, Luca},
    size = {6 p. submitted version},
    keywords = {wearable device; Covid-19; smart sensing; low power design; Tiny Machine Learning; wireless sensor networks},
    language = {en},
    DOI = {10.3929/ethz-b-000476189},
    title = {H-Watch: An Open, Connected Platform for AI-Enhanced COVID19 Infection Symptoms Monitoring and Contact Tracing.},
    Note = {IEEE International Symposium on Circuits and Systems (ISCAS 2021); Conference Location: online; Conference Date: May 22–28}
}