An Ultra-low-Power Integrated Heartbeat Detector for Wearable Sensors

Antoine Gautier (1) , Marine Dael (1) , Robin Benarrouch (2) , Benoit Larras (3, 2) , Antoine Frappé (4, 5)

1 ISEN-Lille - Institut Supérieur de l'Electronique et du Numérique - Lille
2 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
3 MICROELEC SI - IEMN - Microélectronique Silicium - IEMN
4 MICROELEC SI - IEMN - Microélectronique Silicium - IEMN
5 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520

To optimize energy consumption in wearable sensor networks, an efficient scheme is to set the sensors in sleep mode and wake them up to engage communication. However, synchronicity between the sensors needs to be assured by always-on local oscillators. This work proposes a different topology that takes advantage of the heart beat to wake-up wearable sensors. The electrocardiogram (ECG) is detected by two probes and then converted into a pulse signal. Using 28-nm FD-SOI CMOS technology, this solution is implemented on a circuit consuming 19 nW at a 900 mV supply voltage, hence suitable for long term and wearable applications.

Mots clés: Heartbeat detection; Integrated circuit design; 2-electrode sensing; FD-SOI technology

Domaines: Sciences de l'ingénieur [physics]

Antoine Gautier, Marine Dael, Robin Benarrouch, Benoit Larras, Antoine Frappé. An Ultra-low-Power Integrated Heartbeat Detector for Wearable Sensors. Body Area Networks. Smart IoT and Big Data for Intelligent Health, 330, Springer International Publishing, pp.199-211, 2020, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, ISBN 978-3-030-64990-6 ; eISBN 978-3-030-64991-3. ⟨10.1007/978-3-030-64991-3_14⟩. ⟨hal-03377030⟩