Monitoring heart rate and SpO₂ using Thingsboard IoT platform for mother and child preventive healthcare

This paper describes the development of heart rate and oxygen saturation (SpO₂) monitoring system using Thingsboard Internet of Things (IoT) platform. This research is part of development of IoT application for supporting mother and child health program in Indonesia. This IoT-based real time monitoring system enables preventive care and promotes automation to reduce the risk of human error. Measurement of heart rate and SpO₂ is done by pulse oximetry method using sensor module and Raspberry Pi. The Arduino-based sensor module collects, calculates and sends heart rate and SpO₂ data to Raspberry Pi for further analysis based on normal value reference table to detect abnormalities. Further heart rate, SpO₂ and its abnormality status are delivered to Thingsboard using MQTT (Message Queuing Telemetry Transport) protocol. The results show that the system is functioned as expected. Heart rate value (in beat per minute) and SpO₂ value (in percent) are presented while Photoplethysmogram signal (PPG) is presented as graphic on Thingsboard dashboard. The abnormalities status such as tachycardia, bradycardia and hypoxsemia are also featured on the dashboard. We also calculate uncertainty measurement of heart rate and SpO₂ by the sensor module which are ±2.85 bpm and ±0.28%.