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A Wristwatch-Based Wireless Sensor Platform for IoT Health Monitoring Applications.


ABSTRACT: A wristwatch-based wireless sensor platform for IoT wearable health monitoring applications is presented. The paper describes the platform in detail, with a particular focus given to the design of a novel and compact wireless sub-system for 868 MHz wristwatch applications. An example application using the developed platform is discussed for arterial oxygen saturation (SpO2) and heart rate measurement using optical photoplethysmography (PPG). A comparison of the wireless performance in the 868 MHz and the 2.45 GHz bands is performed. Another contribution of this work is the development of a highly integrated 868 MHz antenna. The antenna structure is printed on the surface of a wristwatch enclosure using laser direct structuring (LDS) technology. At 868 MHz, a low specific absorption rate (SAR) of less than 0.1% of the maximum permissible limit in the simulation is demonstrated. The measured on-body prototype antenna exhibits a -10 dB impedance bandwidth of 36 MHz, a peak realized gain of -4.86 dBi and a radiation efficiency of 14.53% at 868 MHz. To evaluate the performance of the developed 868 MHz sensor platform, the wireless communication range measurements are performed in an indoor environment and compared with a commercial Bluetooth wristwatch device.

SUBMITTER: Kumar S 

PROVIDER: S-EPMC7147171 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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A Wristwatch-Based Wireless Sensor Platform for IoT Health Monitoring Applications.

Kumar Sanjeev S   Buckley John L JL   Barton John J   Pigeon Melusine M   Newberry Robert R   Rodencal Matthew M   Hajzeraj Adhurim A   Hannon Tim T   Rogers Ken K   Casey Declan D   O'Sullivan Donal D   O'Flynn Brendan B  

Sensors (Basel, Switzerland) 20200317 6


A wristwatch-based wireless sensor platform for IoT wearable health monitoring applications is presented. The paper describes the platform in detail, with a particular focus given to the design of a novel and compact wireless sub-system for 868 MHz wristwatch applications. An example application using the developed platform is discussed for arterial oxygen saturation (SpO<sub>2</sub>) and heart rate measurement using optical photoplethysmography (PPG). A comparison of the wireless performance in  ...[more]

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