Mathematical Problems in Engineering / 2015 / Article / Fig 4

Research Article

A Novel Short-Time Fourier Transform-Based Fall Detection Algorithm Using 3-Axis Accelerations

Figure 4

Representative normalized power plots for falls: side fall (a); backward fall (b); and forward fall (c). The vertical dashed line indicates the fall impact, and the horizontal dashed-dot-line the threshold (i.e., 0.5).
(a)
(b)
(c)