SYSTEMS & SOFTWARES
AUDIO ANNOUNCEMENT SYSTEM (SAS)
The Onboard Announcement system developed by CLEARSY will be installed in the new Regiolis trains, operated by Alstom. Regiolis is the new TER Alstom one level, linked, low-floor generation which will come into service from 2013.
> Client : Alstom – Project : Regiolis > Equipement : 178 equiped trains > Standards : CEM, vibrations et shocks, temperature
CONTEXT OF THE PROJECT
> The Onboard Announcement system developed by CLEARSY will be installed in the new Regiolis trains, operated by Alstom. Regiolis is the new TER Alstom one level, linked, low-floor generation which will come into service from 2013.
> This new, more modern type of train will have on board a sound announcements system, which will improve passenger comfort by informing passengers in real time of events affecting their journey.
The passenger announcement system developed by CLEARSY is interfaced with the 2 control systems for the doors on opposite sides of the train. It broadcasts pre-recorded sounds selected in accordance with particular circumstances, such as:
> the opening of the doors
> the closing of the doors
It makes it possible to control two doors simultaneously and is connected to 4 loudspeakers (2 internal loudspeakers, 2 external loudspeakers) and receives message generation commands from each door controller.
Management of message priorities is implemented in the software. It is also possible to block other sources of train announcements when the “°door°” announcement generator broadcasts a message.
The system conforms to the NF f 16-102 fire safety standard and to the NF 50155 and NF 74-001-X rolling stock standards.
CLEARSY has developed this product around an architecture based on a PIC32 micro-controller on a Fersil printed circuit board equipped with all the electrical interfaces to link to the loudspeakers and to the door control systems.
The sounds are recorded in a memory in compressed digital format, free of royalties and communication with the doors system is transmitted via a CAN bus. The sound is decompressed by the software to transform the digital format into analogue in order to send it to the loudspeaker(s) in mono or stereo digital mode at 44100Hz.
A multiplatform graphics application makes it possible to set the SAS board and to fine-tune the configuration of each sound via a RS485 interface. As part of developing the leading part of the programme CLEARSY has:
> Adapted the software, the printed circuit board, the casing and its interfaces for human language
> Performed integration testing on the train
> Performed validation testing on site
It is planned to supply SAS systems for all Regiolis trains.