REVISTA ROMÂNĂ DE AUTOMATICĂ - IPA SA

REVISTA ROMÂNĂ DE AUTOMATICĂ
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3.2. The SMARTBUS-AVL system
Figure 3 The travel card issuing application.
The info kiosk application
Figure 4 The mobile validation application.
The driver console – the “Ticketing” module
Figure 5 GPRS communications in the ticketing
system
The AVL system is implemented in order to
monitor and administrate the vehicle fleet,
and to maintain an operative link with
vehicles in the traffic.
The following hardware infrastructure was
implemented:
1. a server cabled to the Internet having
a forward IP, to be used by the AVL
server application;
2. a central server which hosts the
database SQL SMARTBUS,
connected to the server network with
forward IP;
3. PC workstations and a laptop which
emulates the on-board computers,
having dynamic IP (assigned through
DHCP by Orange mobile network
operator) and the network connections
made through GPRS modems;
4. GPRS modems Telit EZ-10 GPS,
each one connected on a PC/laptop
serial port, which allows both the
determination of the geographic
position through GPS system and also
data mobile connections.
The AVL and communication component
aboard the vehicle
A software module was implemented with the
role to automaticaly determine the geographic
position of the vehicle through the satellites
of the Global Localisation System - GPS, and
also with the role of a GSM-GPRS mobile
data communication for a real time link
between the on-route buses and the central
dispatcher.
The transmitted information types are:
vehicle localization messages sent to the
dispatcher, respectively bidirectional text
messages (the driver can announce to the
dispatcher, for example, unexpected traffic
situations or tehnical issues, but can also be
notified by the dispatcher).