Experimental Characterization of a Passive Wearable Tag for Respiration Rate Monitoring

The rise of interest in the Internet of Things (IoT) and the demand for the devices to keep up with the requirements of this new paradigm is driving the research community to develop innovative solutions and products for this purpose. In particular, for the monitoring of vital signs, including the respiration rate, the sensing devices used must measure and store measured data regarding the vital signs, generate reports, and alert healthcare professionals in dangerous or critical situations. In this paper, a passive wearable sensor tag for the monitoring of the respiration rate is presented. The proposed tag is suitable for real-time continuous monitoring and for integration and conformity with IoT requirements. The proposed sensor was experimentally verified on a human test subject and the respiration frequency at different breathing patterns was accurately retrieved.