A wearable heat stress device typically uses sensors that can measure body or skin temperature, as well as the ambient temperature and humidity. While this was a positive shift for wearables, further innovation is now providing more accurate solutions. Read more.

The Bodytrak device has been designed to withstand normal wear and tear under tough working environments, but it should not be submerged in water.

For industrial workers, the most accurate approach to measure heat stress is through physiological monitoring that takes into account core body temperature as well as heart rate. Monitoring core body temperature provides a more precise measure to the body’s response, less affected by external temperatures and other variables. Bodytrak, a comprehensive smart safety solution, uses a wearable in-ear device to provide real-time data on an individual’s physiological responses to workplace stressors, including environmental heat, offering a more personalized and accurate assessment of their heat stress level.

Find out how modern technology and real-time data analytics can help organizations manage the risk of heat stress and proactively prevent heat-related illness.

Bodytrak captures real-time physiological data using in-ear sensors, analysed by machine learning (ML) on the device and in the cloud to provide critical insights. Due to its close proximity to the hypothalamus, the temperature control centre of the body, and since the eardrum receives its blood supply from the carotid artery, the ear is an excellent body site to measure core body temperature and heart rate accurately.

Heart rate data from Bodytrak shows a mean absolute error of 2.87 beats per minute compared to a control ECG device, and CBT data from Bodytrak shows a mean absolute error of 0.18°C compared to a gastro-intestinal pill. Our fatigue scores have been validated during trials where mental fatigue, physical fatigue or drowsiness was induced to ensure precise data. This is a strong indication of the effectiveness of our solution.