University of Alberta and Canadian Department of National Defence researchers have created a small battery-free sensor for monitoring vital signs and detecting frostbite in soldiers enduring extreme cold conditions. This innovative sensor has broader potential applications beyond military use.
Ashwin Iyer, a professor at the University of Alberta’s engineering faculty, is leading the research team collaborating with the Department of National Defence’s Innovation for Defence Excellence and Security program. The project aims to leverage commercial telecommunications technology for military purposes. The university’s expertise lies in developing SWaP-C systems, emphasizing low size, weight, power, and cost technologies.
In an interview with CBC’s Shannon Scott on The Trailbreaker, Iyer discussed the project’s vision and goals. The team’s primary objective was to equip soldiers, particularly in harsh environments like the High Arctic, with biometric sensors to monitor vital signs such as heart rate, respiration, and body temperature. These sensors, which operate without batteries, can provide crucial health data to commanders for timely intervention.
Traditional battery-powered devices struggle in extremely cold temperatures like -70 C due to the limitations of lithium-ion battery technology. To address this challenge, the team developed sensors that can harvest energy from the environment, eliminating the need for batteries. The sensors utilize radio frequency identification technology to power themselves up and transmit data wirelessly.
By miniaturizing the sensor components, the team ensured that the devices are compact, wireless, and efficient. The sensors can detect early signs of frostbite by monitoring core body temperature and extremities’ temperatures, alerting users when thresholds are reached. Beyond military applications, the technology shows promise in emergency response scenarios and environmental monitoring, offering a versatile solution for various settings worldwide.