Today, at the Imec Technology Forum, Imec and Holst Centre are demonstrating what they describe as the most advanced smart garment to date.
The smart T-shirt measures a highly accurate electrocardiogram (ECG), recognises activity and calculates energy expenditure in an unobtrusive way, according to Imec.
“Smart garments have the ability to tackle a vast range of applications from fitness tracking and healthcare monitoring to safety applications, such as firefighters working in dangerous situations,” says Imec’s Ruben de Francisco.
The T-shirt can monitor heart rate, heart rate variability, activities performed and calories burned, and share information over the cloud via a mobile phone, tablet or PC.
The T-shirt features Imec and Holst Centre’s flexible smart fabric interconnect technology, and miniaturised electronics (15x20x2mm) integrated into a module of the size of an extended SD card, containing Imec’s multi-sensor data acquisition chip (MUSEIC) with embedded processing, a battery and a Bluetooth Low Energy radio chip.
The module weighs only 7g (including the battery), and can be removed to wash the shirt or charge the battery.
Imec and Holst Centre’s patented flexible and stretchable interconnect technology preserves the original properties of the fabric, so that the T-shirt remains flexible, stretchable, breathable, lightweight and washable.
Sensors, actuators and electronics can be placed anywhere to ensure the highest data quality. All the steps used to integrate the smart electronic functionality – including the lamination technique and interconnect technology – are compatible with most standard material production processes and conventional textile manufacturing, enabling rapid industrialisation.
“The power consumption of our smart T-shirt has been optimised to achieve long battery autonomy, enabling a wearer to be continuously monitored for the equivalent of three Iron Man races back-to-back,” says Holst Centre’s Jeroen van den Brand. “It also offers the perfect platform to integrate additional capabilities such as breathing rate measurements and dehydration monitoring. And we are exploring ways to extend the functionality and to render the garment more communicative, e.g. to feedback the data to wearers. This can be done by integrating simple LED indicators, actuators for haptic feedback or, in the longer term, smart display technologies.”
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