A real-time vital sensing system for persons during exercises

Real-time vital sensing for persons during exercises is important for effective physical training, healthcare and injury/disease prevention. We have developed a vital sensor node which can sense heart rate (HR), energy expenditure (EE) and body temperature (BT), and furthermore can transmit the sensed data by wireless in real-time, just by hanging itself with the clip at the rim of undershorts. The vital sensor node utilizes a motion artifact (MA) cancellation technique to accurately sense HR during vigorous exercises and an EE estimation technique by means of a motion sensor to accurately sense EE. In this paper, we outline the essence of the two techniques.