Emsis — Manual
4. Emsis EMS
The absolute pressure sensor is used to calculate altitude and
vertical velocity (vario).
The differential pressure sensor provides indicated airspeed -
IAS. When it is coupled with the outside air temperature -
OAT sensor, it also calculates true air speed - TAS.
Assuming coordinated flight, we calculate the referencing attitude
from the gravity vector and heading. These values are then compared
with the short-term prediction of the attitude. Non-linear Kalman
filters are used to combine the short-term prediction and referencing
attitude solution into one most probable solution. This is what you
see on the attitude indicator.
In a very similar way, short-term inertial position prediction is com-
pared with the GPS position. Again, Kalman filtering is used to
obtain the final solution.
When engine monitoring unit (Daqu) is present on CAN bus, Emsis
PFD can also show relevant engine and fuel information.
When maps are enabled and licensed, Emsis PFD can also show
raster maps on graphical display. Further chapters reveal the details.
4
Emsis EMS
Emsis EMS (Engine monitoring system) consists of electronic units
which work closely together to bring engine and fuel information onto
graphical display. The system is presented in Figure 4. The system
consists of the following electronic components:
Engine monitoring unit (Daqu) is used to connect the engine,
fuel and electric sensors.
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Kanardia
2021
