University of Alberta researchers, in collaboration with the Department of National Defence in Canada, have created a small sensor that operates without a battery. This sensor is capable of monitoring vital signs and detecting frostbite in soldiers exposed to extreme cold. The project, led by Ashwin Iyer, a professor at the University of Alberta’s engineering faculty, is part of a long-term initiative with the Department of National Defence’s Innovation for Defence Excellence and Security program.
The sensor technology aims to leverage commercial telecommunications advancements for military applications. The University of Alberta is renowned for its expertise in developing SWaP-C systems, which are characterized by their compact size, low weight, minimal power consumption, and cost-effectiveness.
In an interview with CBC’s Shannon Scott on The Trailbreaker, Iyer discussed the sensor’s development and potential applications beyond the military. The sensor is designed to withstand temperatures as low as -70°C, addressing the limitations of traditional battery-powered devices that struggle in extreme cold environments due to lithium-ion battery technology’s inefficiency.
The sensor’s functionality relies on harvesting energy from the surrounding environment, such as body motion or radio frequency identification technology. By utilizing radio frequency waves, the sensor chips can power themselves and conduct sensing operations, transmitting essential data for monitoring purposes.
The primary objective of the sensor system is to provide real-time health monitoring, particularly in identifying early signs of frostbite in soldiers. By deploying sensors to track core body temperature and extremity temperatures, the system can alert personnel to potential health risks, allowing timely intervention and assistance.
While initially designed for military use, the sensor technology holds promise for various applications, including emergency response operations and environmental monitoring. With its wide temperature range capabilities and diverse sensing capabilities, the sensors have the potential to be utilized globally for different monitoring needs, such as detecting environmental hazards like flooding or gas leaks. This versatile technology underscores the importance of military innovation in driving advancements with broader societal impacts.
