Terms and Definitions
DFM fuel flow meters. Operation manual. Version 8.0
© Technoton, 2020 8
GNSS (Global Navigation Satellite System) —System for area positioning of an object
through satellite signal processing. GNSS is composed of space, ground and user segments.
Currently, there are several GNSSs: GPS (USA), GLONASS (Russia), Galileo (EU),
BeiDou (China).
Analytical report —report generated in ORF 4 on vehicle or group of vehicles operation
for chosen time period (usually a day, week or month). Can be composed of numbers,
tables, charts, mapped route of vehicle, diagrams.
Onboard equipment (OE) —Telematics system elements, directly installed in Vehicle.
Onboard reports (the Reports) —information about vehicle which is returned to a user of
Telematics system in accordance with inputted criteria. The Reports are generated by a
terminal unit both periodically (Periodic reports) and on Event occurrence (Event report).
Route —coordinates, speed and direction of vehicle movement. It matches with the route
of the vehicle on the road. The map is displayed in the form of lines. Vehicle direction is
displayed in the form of arrows.
Parameter —time-varying or space characteristic of the Vehicle (SPN value). For example,
speed, fuel volume in the tank, hourly fuel consumption, coordinates. Parameter is usually
displayed in the form of graph, or averaged data.
Server (AVL Server) —hardware-software complex of Telematics service ORF 4, used for
processing and storage of Operational data, formation and transmission of Analytical reports
through Internet by request of ORF 4 users.
Event —relatively rare and sudden change in SPN. For example, applying the magnetic
field to the fuel flow meter in order to falsify indications of the hourly fuel consumption is
the “Interference” Event. An Event can have one or several characteristics. Thus, the
“Interference” Event has the following characteristics: date/time and duration of the
interference. When the Event occurs, a terminal unit registers the time of occurrence, which
is later mentioned in a report on the event. Thus, the Event is always attached to exact time
and place of occurrence.
Counter —cumulative numerical characteristic of Parameter. Counter is displayed by a
single number and over time its value is increasing. Examples of counters: fuel
consumption, trip, engine hours counter etc.
Telematics terminal (Terminal, Tracking device, Telematics unit) is a unit of Telematics
system used for reading the signals of Vehicle standard and additional sensors, getting
location data and transmitting the data to the Server.
Telematics system —complex solution for vehicle monitoring in real time and trip
analysis. The main monitored characteristics of the vehicle: Route, Fuel consumption,
Working time, technical integrity, Safety. In includes On-board report, Communication
channels, Telematics service ORF 4.
Vehicle an object controlled within Telematics system. Usually Vehicle means a truck,
tractor or bus, sometimes a locomotive or river boat. From Telematics system point of view,
stationary objects are also considered to be vehicles: diesel gensets, stationary tanks,
boilers/burners.
Function module (FM) unit-embedded component of hardware and software combination,
executing a group of special functions. Uses input/output PGNs and settings PGNs.
Unit is an element of vehicle on-board equipment compatible with S6 bus, which uses
S6 Technology.
