3.2. System description
The NeverStop system is composed of five components, three of
which are hardware components (EBOX II, RFID device and Traffic
Light Control Unit) and the others are software components (NeverStop
System Controller Module and Central Server). Further more,
the System Controller Module includes three subcomponent modules:
Fuzzy Rule Module, Controller Module and Genetic Algorithm.
The architecture module is presented in Fig. 2.
The EBox is the central hardware component of the system.
Within the EBox runs a Windows CE Image which is the operating
system for the EBox. On top of this Image runs the NeverStop System
Controller that determines when to get the traffic congestion
state, when to get the delay time and when to change the phase.
The NeverStop System Controller is connected through the EBox
to the Traffic Light Control Unit via the serial port controller. The
Traffic Light Control Unit is taking charge of the management of
the traffic lights. The input module deals with the raw data from
RFID and organizes them into useful information. Finally the Central
Server operates the traffic lights remotely and is used to store
the configurations for a group of neighborhood intersections. The
NeverStop System Controller is connected to the Central Server via
the EBox’s RJ-45 Ethernet port for hardware connection.