ETCS is the European Train Control System promoted by the European Commission for use in Europe to replace national Train Control Systems and allow interoperability, i.e. international traffic without the need to equip rolling stock with several country-specific Train Control Systems. ETCS is an automatic train protection system, based on cab signalling and track-to-train data transmission.
It ensures safe operation of trains at all times. HaslerRail offers various components and systems to support ETCS train-bourne equipment.
Operation Module ETCS
According to current EU legislation, new or modified devices with safety relevant functions have to be designed according to the EN 50126 standard in order to receive a defined Safety Integrity Level (SIL) certification. Safety- relevant information is often already available in the data recorder; therefore, it is sensible to use it to carry out safety-related functions such as roll protection, dead man function, Driver Safety Device (SIFA), speed threshold, etc. To assist our customers in the design of functions up to SIL4 level in new rolling stock or modernisation projects, HaslerRail has developed the Hasler® SABO Safety Board which also helps to simplify the certification process of an entire system.
HaslerRail components complement the entire ETCS on-board system – from data acquisition by different sensors to Cold Movement Detection, the actual Juridical Recording Unit, signal transmission and data evaluation. Furthermore, HaslerRail offers their engineering services to ETCS suppliers in order to joint-develop Specific Transmission Modules (STM) or other safety related components, hardware and software, with SIL certifications up to level 4.
Data analysis has to be automated in order to look at data continuously and in a uniform manner and to generate information out of recorded data. With this in mind, HaslerRail has developed its software tool Hasler® EVA+.
It is possible to evaluate and compare National and ETCS data sets in the same software tool. Further- more, JRUs not only record data from on-board equipment but also indirectly from trackside systems, e.g. ETCS balise failures, GSM-R coverage problems, etc. Combined with GPS data these events can be shown on a map. Continuous analysis will show whether the problem is located trackside, e.g. a balise defect, or on the vehicle. This saves costs, as a trackside issue is usually tested with specially equipped test vehicles that need to be used outside the timing of normal operations which is in most cases during the night.
COMPONENTS MODULE ETCS
HaslerRail provides a complete range of sensor products to be used for ETCS Odometry Unit (ODU). The design of HaslerRail’s optical pulse generator, Hasler® OPG, based on an optical system that operates in the infrared range, has been designed to resist the most extreme mechanical and thermal stress. In recent years however, the increase of operational speeds and the optimization of network capacities have led to the fact that the existing standards no longer represent real-life conditions in the rail environment. Based on vibration data collected in the field, HaslerRail has designed a heavy duty pulse generator, Hasler® HDPG, around a new sensor technology in the form of a lightweight ASIC.
Due to its accuracy and reliability, Hasler® Pulse Generators and Hasler® Hall-Effect Sensors are already widely used and longtime proven in service for ETCS, CBTC and National applications.
It is important for the ETCS on-board system to know whether an engine (train, locomotive) has been moved or not during the time it has not been powered, i.e. powered off, No-Power mode. If the movement information is missing, the train driver must drive in a degraded mode to the next synchronisation location in order to synchronise its position with the wayside location (e.g. ETCS balise) which is a time-consuming and expensive task for operators. Hasler® CMD supervises movement during power off phase and provides information to the on-board system (ETCS) about the movement (SIL 4 function).
Since today’s Radar-based ETCS distance measuring devices have revealed their weaknesses in service, e.g. in harsh weather conditions or on iron bridges, Hasler- Rail has developed the Hasler® CORRAIL1000 sensor which offers a contactless, track-bed independent, direct measurement of a rail vehicle’s speed and operating direction, using the railhead as a reference. In order to work even in the harshest environments, particular care was taken to ensure robustness as well as easy maintenance and care. Due to its special construction which will avoid soiling of the LEDs as well as optical dirt detection and its installation on the bogie frame in the wheels’ lee, the Hasler® CORRAIL1000 sensor is insensitive to almost any kind of dirt, e.g. ballast dust, snow, rust, etc.
TELOC® systems can be connected to mobile gateways (routers)
to send data to an off-board server. This makes data accessible to different interest groups.
HaslerRail offers its engineering services to ETCS suppliers in order to joint develop Specific Transmission Modules (STM) or other safety related trainborne components, hardware and software, with SIL certifications up to level 4. Various components have been developed over the past years together with ETCS suppliers, e.g. TBL1+ STM for Belgium, where HaslerRail delivers homologated hardware components and software with SIL4 certification.
The requirements for ETCS Juridical Recording Units (JRU) are defined in TSI OPE and CCS. TSI OPE defines that data pertaining to the running of a train must be recorded and retained for the purposes of supporting systematic safety monitoring as a means of preventing incidents and accidents, identification of driver, train and infrastructure performance in the period leading up to and, if appropriate, immediately after an incident or accident, enabling the identification of causes, and supporting the case for new or changed measures to prevent recurrence and recording information relating to the performance of both the locomotive /traction unit and the person driving.
All HaslerRail TELOC® recorder types are capable of any recording combination: ETCS only, National data only or combined ETCS and National data solutions.