MONI LOG EnDal smart Instruction Manual page 34

PC SOFTWARE – MONI LOG® ANALYZER
Inclination graph:
In the programme tab "Inclination position graph", the static inclination values of the synchronous
dates are shown as a graph. By activating or deactivating the "check marks" in the legend on the
right side, the x-, y- and z-channel can be switched on or off respectively (see Figure 17). The
static inclination can be superimposed by occurring accelerations. The representable area is at
± 2 g. For that purpose, check the magnitude: if it significantly deviates from 1 g, then the actual
position is no longer reliably determinable.
Inclination angle:
The human imagination quickly reaches its limits in case of a three-dimensional representation of
the spatial position of three coloured lines. For the better understanding of the orientation of the
sensor module, use is made of the graphical representation of the three spatial angles in the style
of analogous aircraft instruments. The designations are based upon the ENU reference system
("right hand rule", see https://en.wikipedia.org/wiki/Aircraft_principal_axes).
Calculation of the angles:
Rotation around x-axis:

Rotation around y-axis:

Rotation around z-axis:

Figure 17: View of inclination position graph
roll angle Φ = arctan (y/z)
pitch angle Θ = arctan (z/x)
yaw angle Ψ = arctan (x/y)
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EnDaL smart