EMSIS – User’s and Installation Manual
4.1 Engine Sensors
Engine related sensors are connected to the engine monitoring unit (DAQU). DAQU unit is designed to be
installed on the engine side of the firewall. This has two advantages:
Since the unit is close to the engine all cables are short and no extensions are needed. This means
less weight and makes installation simpler.
We need only one tiny hole through the firewall for the CAN bus cable. The cable transfers all the
information and provides the power supply for DAQU unit.
DAQU unit is designed to monitor engine sensors for various engines such as Rotax, Rotax iS, D-motor,
Jabiru, UL-Power, Lycoming, Continetal, Simonini, Hirth etc. When an engine is equipped with proper
sensors, it can measure engine RPM, cylinder head temperature (CHT), exhaust gas temperature (EGT),
oil pressure, oil temperature, fuel pressure, fuel flow, fuel level, manifold pressure, carburettor air
temperature, voltage, battery current, alternator current, coolant temperature and more. We often add new
functions on request of our customers (E.g. lambda, oil flow, etc.) In the case of gyroplane or helicopter
installation, it also reads the rotor RPM sensor and sometimes pneumatic pressures. The results of all these
measurements are then transmitted on the CAN bus, where all other units are able to access them.
More about DAQU unit and engine sensors is written in DAQU Installation Manual.
4.2 CAN Bus
The EMSIS system can be easily extended into a much more complex form, shown on Figure 4. We
achieved this by introducing CAN bus for the communication between the units. The CAN bus does the
magic of the all possible known and unknown future extensions.
Imagine the CAN bus as a kind of computer network. Just like new computers can be easily connected to
the network, we connect all new devices to CAN. This allows introduction of secondary EMSIS unit,
electronic compass (MAGU), pilot command stick, etc.
Figure 4: Illustration of EMSIS configuration using CAN bus.
5 Main Page
The EMSIS unit can toggle between several different main screens depending on your EMSIS type:
•
Primary flight display (PFD) screen
– artificial horizon with air data.
•
Engine monitoring screen
– relevant engine and fuel information, more than one screen is also
possible.
•
Maps screen
– graphical display of raster maps.
•
EMSIS setup
– used to change different settings and options.
5.1 Primary Flight Display Page
The
Primary flight display
page is illustrated on Figure 5. It is an artificial horizon with the flight data
9
Emsis
Secondary
Emsis
Electronic
Compass
Pilot
Stick
Special
Devices
CAN bus
