UMAX0608XX‐1000. Tri‐Axial J1939 CAN Inclinometer. Version 9B
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Single‐Axis
|Angle|>90°
Tilt Angle ±90°
Euler or Unit
Rotation Angle
Yes
No
Angle in pitch
direction
Unit Rotation Angle
Yes
No
Figure 7. Single-Axis Measurements
In case it is necessary to get the ±180° range for both: pitch and roll angles with a smooth
angular transition, the unit rotation angles should be used. Otherwise, the Euler angles are
preferred, since they have a gimbal lock only for the roll angle, the pitch angle is numerically
stable in the whole measurement range.
Dual‐Axis
|Angle|>90°
Tilt Angle ±90°
Angular position
in space
Smooth angular
transition
No
No
No
Tilt Angle ±180°
Pitch angle
±180°
Euler Angle
Unit Rotation Angle
No
Yes
Yes
Yes
Yes
Figure 8. Dual-Axis Measurements
The Euler angles are the angles of choice when it is necessary to determine the unit angular
position in space. The yaw angle is then resolved by an external magnetic or GPS sensor.
Even when the Euler angles are not used to calculate pitch and roll angles, they are still used
internally to compensate the unit initial installation angles.
2.1.3.5 Default Settings
Inclinometers: AX060800, AX060830, AX061000, AX060806, AX060810, AX060807,
AX060811 measure tilt angles in the ±90° range by default
1
.
