An Ultra Low Power Personalizable Wrist Worn ECG Monitor Integrated with IoT Infrastructure

Christopher Beach, Sammy Krachunov, James Pope, Xenofon Fafoutis, Robert J. Piechocki, Ian Craddock, Alexander J. Casson*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

64 Citations (Scopus)
328 Downloads (Pure)


Cardiovascular diseases are the leading cause of death in the U.K., motivating the use of long term wearable devices to monitor the heart in out-of-the-clinic settings. While a wide number of heart rate measuring wearable devices are now available, they are principally based upon photoplethysmography rather than the electrocardiogram (ECG) and are stand-alone devices rather than integrated with Internet-of-Things infrastructures which collect and combine information from a wide range of sensors. This paper presents a wrist worn ECG sensor which integrates with the SPHERE IoT platform-the UK's demonstrator platform for health monitoring in the home environment, combining a range of on-person and ambient sensors. The ECG device integrates ultralow power consumption electronics with personalizable 3-D printed casings which maintain gold standard Ag/AgCl electrodes to provide measurements of the raw ECG waveform, heart rate, and meanNN and SDNN heart rate variability parameters. The end device allows for more than a month of battery life for a weight of <50 g including the watch straps. The design and heart sensing performance of the device are presented in detail, together with the integration with the SPHERE IoT platform.

Original languageEnglish
Article number8432430
Pages (from-to)44010-44021
Number of pages12
JournalIEEE Access
Early online date10 Aug 2018
Publication statusPublished - 28 Aug 2018

Structured keywords

  • Digital Health


  • Electrocardiography
  • heart rate
  • Internet-of-Things


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