Integration of several OPC servers
The control system for traffc control in Oslo is introducing the next generation of
data monitoring from the road tunnels.
All communication from the tunnel system’s PLC system must go through an OPC
specifc interface based upon OPC Data Access 3.0. Some of the key points are
highlighted below.
Several challenges must be met by the IGSS system.
One of the challenges is to integrate several OPC servers and continue
communication with the PLC system especially when the number of OPC servers
increase.
The IGSS system must support a hot dualized server solution. An additional
requirement is a third IGSS server acting as an emergency system in Oslo.
For the Human Machine Interface (HMI), the system has to provide a more optimal
visualization of the tunnel over several PC monitors with seamless transition. It
must be possible to scroll an image up to eight monitors wide over only three PC
monitors.
IGSS and Siemens Traffc Management System are meeting these requirements for
the next generation of control systems.
IGSS V9 - multiuser
The system runs on an IGSS multiuser system with 15 operator stations split
between the dualized servers and the emergency server.
All PLCs communicate with IGSS using the OPC Data Access (DA) 3.0 protocol.
Safety on the roads and in the operation
The implementation of the new system has improved the safety for the road-users
and has provided the operators with an intuitive user interface.
Tracking of data
The staff at the control center would like to be able to track more data from the
underlying systems. The Microsoft SQL server could provide this data.