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Safe architecture for Robust distributed Application Integration in roLling stock 2

Periodic Reporting for period 1 - Safe4RAIL-2 (Safe architecture for Robust distributed Application Integration in roLling stock 2)

Reporting period: 2018-10-01 to 2020-03-31

Safe4RAIL-2 is a project aimed at improving the safety and efficiency of the European railway system. Safe4RAIL-2 takes as its baseline the results from previous projects, such as Safe4RAIL, where the main technologies and reference architectures were established, and uses them for building functional prototypes to be tested in the Technology Demonstrators (TD) of the Innovation Programme 1 (IP1) of Shift2Rail. These demonstrators will be set up in cooperation with CONNECTA-2 project, whose consortium is formed by leading manufacturers and railway operators in Europe.

Safe4RAIL-2 has three main objectives:
1. To increase the accuracy of data management in the communications inside the train. For this purpose, Time Sensitive Network (TSN) technology is being integrated in the communication devices of the train.
2. To develop wireless solutions in order to remove the wiring of the internal communications of the train. LTE Device-to-Device (D2D) communications are being integrated in the train backbone, what will add flexibility to the configurations of the trains.
3. To cut the development time of new applications for trains. For this purpose, abstraction middlewares (called Functional Distribution Framework) as well as simulation and verification environments are being used. This will reduce drastically the time and costs of application development.

The technologies that are being developed in Safe4RAIL-2 will improve the innovation and competitiveness of the European railway sector, through the previous three axes of the project.
In the first period of the project all specification and design phases have been completed. The achieved milestones (MS) are detailed below:

- MS1 - Requirements fixed: requirements have been completed for Drive-by-Data devices and HVAC subsystem integrated on FDF and SF, as well as an interim version of the requirements for wireless devices.

- MS2 - Internal and external communication and data-management strategies have been released, as well as the project handbook for quality assurance.

- MS3 - Wireless requirements and State-of-the-art completed: a final version of the requirements for wireless devices has been completed, as well as state of the art reports of wireless technologies for Wireless Train Backbone (WLTB) and Wireless Consist Network (WLCN).

- MS4 - Designs of network devices, LTE equipment and HVAC subsystem completed: designs of DbD network devices and wireless equipment have been completed, as well as the implementation of the HVAC subsystem and first interoperability tests of ETBNs for safe train inauguration.

- MS5 - A risk assessment strategy has been fixed, and interim results on communication, dissemination, exploitation and standardisation have been made available.

Public results generated up to now are available on the project website, in section 'Deliverables'.

Project activities are currently focused on the development of prototypes for the three technological domains of Safe4RAIL-2. These prototypes will be completed in the next period, and they will be integrated in the demonstrators of CONNECTA-2 project.
These are the advances and impacts in the three research areas of the project:

1. The consortium is implementing, for the first time in the railway sector, the Time Sensitive Network (TSN) technology, which has mechanisms to create, distribute, synchronise and operate systems in real time. Even though current trains already meet very high safety standards, the TSN technology will increase the time precision with which the monitoring and control data are managed in the bus of the train (the Train Control and Monitoring Systems, or TCMS), increasing in this way the safety of the different train systems.

2. Current communication systems inside the train are based on wired solutions that are very costly to maintain and reduce the flexibility of installations. For this reason, Safe4RAIL-2 is developing a wireless solution for the bus of the train that removes the current physical connections, which reduces maintenance costs and gives greater flexibility to operations such as the connection and disconnection of wagons. This has involved an analysis of currently available wireless standards and the subsequent implementation of improvements on the standards in order to fulfil the communication requirements of the train.

3. Another output of the project is the integration of train applications on the Functional Distribution Framework (FDF) middleware and on simulation and verification environments (Simulation Framework, SF). This allows train subsystem providers to develop applications using common interfaces and to test the applications prior to their installation in trains, something that today can only be certified by physically installing the actual developments inside the train. Within Safe4RAIL-2, a demonstration of these technologies is being made for a Heating, Ventilation and Air-Conditioning (HVAC) system.
Generic train picture for dissemination activities
Work-Package Structure
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