Wearable Health Monitoring System Based on Human Sweat Analysis using Electrochemical Sensors

With the recent development in the field of electronics, it has made possible to continuous monitor health of patients and elderly and even of normal person. Since many years we are using blood-based diagnosis for diagnosis of various health conditions and diseases. However, recent research done by many researchers shows that there are other potential biomarkers such as, sweat which can provide diagnosis of various health conditions and diseases. Sodium and chloride concentration in sweat provides status of hydration status in human body. Here we have designed a health monitoring device based on sweat analysis using different types of electrochemical sensors. Ion-selective electrodes for Na+ and Cl- are used which gives details about a person’s hydration status and a glucose sensor is also used to measure the sweat glucose levels. The sensors are calibrated for artificial sweat solutions with different concentrations of Na+, Cl- and glucose. On body testing is done to confirm functionality of designed system for sweat analysis. The system is compact so can be used as a wearable device that is capable of continuously monitoring and wirelessly transmitting sensor data to the personal computer or smartphone.