Low-Cost Sensor System Design for In-Home Physical Activity Tracking

December 14, 2016

Siddhartha Nambiar, Alexander Nikolaev, Melissa Greene, Lora Cavuto, Ann Bisantz

Low-Cost Sensor System Design for In-Home Physical Activity Tracking

An aging and more sedentary population requires interventions aimed at monitoring physical activity, particularly within the home. This research uses simulation, optimization, and regression analyses to assess the feasibility of using a small number of sensors to track movement and infer physical activity levels of older adults. Based on activity data from the American Time Use Survey and assisted living apartment layouts, we determined that using three to four doorway sensors can be used to effectively capture a sufficient amount of movements in order to estimate activity. The research also identified preferred approaches for assigning sensor locations, evaluated the error magnitude inherent in the approach, and developed a methodology to identify which apartment layouts would be best suited for these technologies.

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