We will focus in this paper solely on the algorithms and
their ability to accurately detect sleep and wake phases, from
any source of inertial sensor data. Since the two aforementioned algorithms were specifically designed for use on signals
from particular omni-directional accelerometer sensors, we
first needed to adapt these for raw 3D MEMS acceleration
sensors. The next section will provide the details on how these
algorithms were re-implemented, based on comparison studies
by other researchers, for detecting sleep and wake phases in
raw accelerometer data such as those from the open-source
inertial data loggers deployed in this paper.