Alstom Transport Technologies

Andy Prestail

Javier Ballesteros

This system includes a ground ATC and an on board ATC, which is switched from an 'active' mode toward a 'standby' mode and vice versa by a wake-up unit. In the &#x201c;standby&#x201d; mode, only the following components remain powered: odometry device; a main computer; a radio communication device between the on board ATC and the ground ATC; the wake-up unit. The main computer is programmed so as, in the &#x201c;standby&#x201d; mode, to verify that the movement of the train measured by the odometry device from the switching from the &#x201c;active&#x201d; mode to the &#x201c;standby&#x201d; mode is zero and, in the affirmative, to send the ground ATC an instantaneous position of the train using the radio communication device.

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Meudon, France

Andy Prestail