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

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

Blog Article

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 karate goju ryu book 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 superhero lollipops 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.