Page 332 - IRSEM_Main Book

13.3.3 On-board equipment of IRATP comprises of
(a) On Board Computer (OBC)

(b) RFID readers consisting of two RFID Reader in hot standby

(c) *Driver Machine Interface (DMI), indications and non-resettable counters

(d) Loco Radio Unit consisting of two Radio Modems in hot standby with
separate cables and antennae for each radio

(e) Pulse Generators (Speed Sensors)

(f) Train Interface Unit (TIU)

(g) Interface to existing brake control system which in turn controls application
of normal/service/emergency brakes or interface to existing brake system
directly

(h) Power supply arrangement

(i) Suitable isolation arrangement for isolating the system.

*Note: MMI stands for Man Machine Interface = DMI

13.3.4 (a) Based on inputs received from Signalling interlocking, the Stationary unit of
TCAS generates Movement Authority which is transmitted to the train via
radio.

(b) Stationary unit of TCAS shall have feasibility to interface with relay based
Interlocking and Electronic Interlocking.

(c) Train detection and train integrity supervision are performed by the
trackside equipment of the underlying signalling system (interlocking, track
circuits etc.).

Chapter 13: ATP, ETCS, IRATP (TCAS) & TMS Page 286 of 535