Ansaldo STS, a Finmeccanica company is the Italian leader in design and construction of signalling and automation systems for conventional and high speed railway lines and mass transits. Ansaldo STS was appointed from Società dei Trasporti Alto Adige (STA) for the revamp of Merano-Malles line, including rail signaling system, maintenance, security, audio diffusion, electric system control, phone over IP, network diagnostic and video surveillance.
In order to implement a high-availability solution, Ansaldo STS choose Hirschmann™ MACH3001 providing full fault tolerant communications. All train stations are also equipped with video encoders for visualization of train stops and waiting rooms.
The backbone network is used as shared channel for all non-vital automation systems, generically defined as service systems. Among the service provided, some refer to applications requiring a high level of reliability and safe communications and the most challenging considering the technology status at the specific period was the video-surveillance system over IP. For long term investigations of movements on train stops, a digital storage concept based on Hirschmann™ VIMAS-NVR servers has been set up.
For this implementation, a circular buffer storage of maximum five days is provided for each video stream; five NVR video servers were set-up for storing 41 MPEG-4 video streams in total. Two Operator PCs are equipped with Hirschmann™ VIMAS software; a specific interface called WISIOM was also provided by InterSat.
Using a signal provided by the railway signaling system, five trains are followed along the railway and displayed on five of the eight monitors in Control Room. The two other monitors cyclically display the tunnels and the waiting rooms.
The network is a single mode fiber optic Gigabit-ring based on MACH3001 backbone switches. The video streams are encoded with R-VIP-T video servers. Two MACH3001 are used as front-end between the control room and the ring, providing full-redundant connectivity to NVR servers and operator stations and single connectivity to displays.
Scope of services