Many train modernisation projects are driven by an update of communication technology. Nevertheless, many train operators are still reluctant to change the way operational data is managed to anything else but conventional data buses.
These buses are quite limited in bandwidth and require specific equipment manufactured by a select number of suppliers. But they have proven over the years to be reliable and have gained significant trust from the industry.
The development of the IEC 61375 standard for train communication networks takes this into account.
Standard IEC 61375
- Defines the outline conditions for ensuring train network interoperability regardless of the train manufacturer, rail operator, country of origin etc.
- The standard allows the use of different technologies
Enable the construction of:
Data networks running in parallel on a train, e.g.
- Train backbone networks using WTB (Wire Train Bus) connectivity components
- Networks using MVB (Multifunction Vehicle Bus) connectivity components
- A bus-technology network for operational data
- A switched-technology network for multimedia data
Unlike multimedia data, operational data is generally considered to be more safety critical as it relates to the data generated by sensors monitoring operational key functions of the train:
- Traction control
- Air conditioning systems
Inter-vehicle jumper systems - important backbone component
- Demanding environmental conditions
- In trains at very high speed
- Permanent movement, exposure to vibrations and shock
- Particularly high or low temperatures, moisture, detergents, dirt, UV radiation
- 100% tested and optimised system cables specially developed for the railway market
- Dedicated cables or a combination of optical cables, data bus, signal and power cables in one system cable
- Maintenance-free use