System operation
UM0704
6/18
Doc ID 15731 Rev 1
2 System
operation
2.1
Starting up the system
When the system is powered up, the user is welcomed with a defined sequence of LED
patterns. This indicates that the system has started up perfectly.
After this welcome message the system enters into the inclination mode, which is the default
mode of the system. For details please refer to
.
2.2
System operation modes
The system is equipped with 6 different modes of operation. These modes have different
functions and the user can navigate through these modes by using the push button switch
designated as 'MODE' and available on the top side of the board.
A detailed description of each mode follows:
2.2.1 Inclination
mode
Inclination is the term which is used to describe the tilt of the system from the equilibrium
position. The equilibrium position is the state when the board plane (MEMS X-Y plane) is
parallel to the ground plane, i.e. the MEMS Z-axis is parallel to gravitational force 'G'. In
equilibrium state all the outer and inner circle LEDs are off.
In this mode, both the tilt in the X-axis and the Y-axis of the board is measured and this
information is displayed using the LED circles.
Tilt on the X-axis
If the Y-axis of the board/MEMS is kept fixed, the board is tilted on the X-axis (see
and
) then the system measures the tilt on the X-axis and this information is shown using
the LEDs on the outer circle of the board.
Figure 3.
Tilt on the X-axis: image of the
board’s X- and Y-axis
Figure 4.
Tilt on the X-axis - image of the
explanation of tilt on the X-axis
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