Wearable Heat Sensors Convert Heat Lost to Calories Burnt

An athlete training on an elliptical wearing FluxTeq’s PHFS Sensor placed between 2 compression shirts (to simulate embedding into athletic fabric) was shown to output about 200 W/m2 of heat flux over the course of a 40 minute workout on an elliptical- corresponding to about 260 calories over the course of the workout.

An athlete training on an elliptical wearing FluxTeq’s PHFS Sensor placed between 2 compression shirts (to simulate embedding into athletic fabric) was shown to output about 200 W/m2 of heat flux over the course of a 40 minute workout on an elliptical- corresponding to about 260 calories over the course of the workout.

Metabolism of food in the human body produces the energy needed for all its activities. This energy goes out from the body in the form of heat. So, one way of measuring how many calories it burns is to measure how much heat is released from the body.

Current calorie trackers estimate calories burnt by correlating it with the heart rate, but the algorithms such wearable devices use are highly inaccurate, leading to wrong estimations of calories burnt. This can be improved significantly by directly measuring the heat energy spent by a person, which can then show accurately how many calories are burnt. Such a device will be unique, and both general consumers, as well as professional athletes, can use it to track energy used and then utilize that to optimize their training routines and avoid overtraining.

Heat Flux Sensor Advantage

FluxTeq’s heat flux sensors can directly measure heat loss through surfaces. By embedding them in clothing or integrating them in wearable devices, thermal energy loss from a person can be directly measured, which can then be converted to calories burnt.

The picture shows a sensor of surface area 1 inch square, but it can be tailored according to needs, and much smaller size sensors can also be designed. They can also be made rigid or flexible. Potential applications could be to embed them in clothes or armbands.

FluxTeq can provide these sensors in large quantities and can work with you to customize a design to fit your application.

This information has been sourced, reviewed and adapted from materials provided by FluxTeq.

For more information on this source, please visit FluxTeq.

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