Device integrates flexible electronics to monitor physical activity

Created by a team from imec and Holst Centre, the prototype device weighs just 1g and measures less than 2 x 2cm. It packs a 1-lead ECG, a tissue-contact impedance sensor and a 3D accelerometer. Data is processed and analysed locally, and relevant information is transmitted via Bluetooth Smart. The patch acquires, processes and communicates data using a minimal amount of energy, allowing extended use with smaller batteries. Moreover, the Bluetooth Smart link provides a standardised communication channel to mobile devices such as smartphones and tablets. The researchers used SiP technology from a company called Shinko Electric Industries to integrate all the required functionality. They say the patch can be worn comfortably on the chest for extended periods. "Comfortable, lightweight wearable systems for personal health monitoring are emerging, given their promise to better analyse patient's physiological parameters," said Chris Van Hoof, program director of Wearable Healthcare at Holst Centre/imec. "We are excited about working with Shinko to successfully bring the technology closer to consumers' needs."