All vehicle functions are controlled by electronics. The control units receive orders from the switches and buttons , as well as information from the sensors. They
transmit signals intended for control devices ( relays , pneumatic,
hydraulic or electric ) or to the ( analogue or digital , lights).
Less wire and more functions
The
interaction between the control units , unattainable with a traditional
electrical system , it is possible thanks to the digitization of
signals and their transmission via the CAN lines . Compared to an ordinary plant , reducing the number of cables, fuses and relays is of the order of 40-50% . For
example , the opening of the crystal on the passenger side can be
adjusted both by the command on the doors , both from the panel of the
bunk of the Active Time cab . A
traditional circuit would result in a relay which converge on three
separate lines , in addition to the direct line to the window motor . With
the new system , each panel has its own management unit , which
transforms the pulse switch in a signal that circulates through a CAN
bus , to reach the control unit of the door .
Furthermore, the number of functions can be significantly increased. It is thus possible to control the radio from the steering wheel and view the stations on the instrument panel display . The driver has information on travel ( average speed, average fuel consumption and instantaneous ) . Even the diagnostic capabilities have been enhanced . The number of transmitted information is so high that it was necessary to establish an order of priority. For
any information has been assigned a level of importance : those
relating to safety have priority over other information, which are
stored waiting to be processed.
The CAN- bus system is divided into four sections : the frame and organs; cabin , instrumentation, radio and communications. For
example, the CAN-bus chassis connects the engine, the automated gearbox
, the Intarder , the brake system EBS, ECAS air suspension control ,
anti-theft system and the sensor of the tachograph. The CAN-bus lines are connected together by means of two control connection , placed in the cabin . For
bodybuilders , there is a unit on the frame , containing all the
terminals needed to connect the lights , the controls of the power
take-offs and power indicators on the instrument panel.
Telematics : the remote management of the fleet
The follow-up at a distance of vehicles through GPS system has two advantages . For
the management of the transport allows you to locate the vehicle and,
thanks to the information of the tachograph , to verify and record the
driving time of the driver. For the purposes of fleet management , data transmission function of the vehicle allows you to schedule the maintenance plan . A
board Stralis , is provided an interface VDI (Vehicle Data Interface )
that can be connected to an onboard computer provided by a qualified
electronic integrator . Iveco has developed a procedure for the qualification of the equipment available on the market. Currently, each European country has one or two authorized suppliers.
Thanks to the electrical and electronic of the Stralis , the driver has information that allow them to optimize driving. The
data from the electronic control units and the organs of the vehicle
are kept in a kind of "black box" and can be used for fleet management. Can be recovered whenever the vehicle returns to the base, or day by day, through a transmission system GPS .
In
addition, the grouping of controls around the steering wheel ( cruise
control , retarder, external optical groups ) and on the wheel itself (
menu commands sliding board computer and radio ) allows the driver to
stay focused on the road and reduces reaction in case of unforeseen events , to the benefit of security.
