Non-Intrusive Sensors for Activity Analysis of Elderly People

In this paper, we describe ongoing research conducted in our Laboratory concerning activity analysis of elderly or frail people with non-intrusive sensors. Activity is evaluated regarding autonomous mobility inferred from indoor tracking of many people. Non-intrusive photoelectric beam barrier sensors have been installed in our lab, in a nursing home and a medical care and research unit for respectively more than one year and 6 months. Incremental design, sensor fusion, data processing and acceptance concerns are discussed in the paper.