Tender invited for Development of Train Collision Avoidance System

ISO 9001: 2008 Effective from 18.06.2012 RDSO/SPN/196/2012 Version 3.1.1
Document Title : Specification of Train Collision Avoidance System
xiii) Indication of working on loco Battery
xiv) Indication of status of Battery Backup Unit
Display of yard layout, signal aspects & location of various Loco unit shall also
be required on 21” LCD screen, wherever provided, in some other room at
station.
9.2. Brake Interface Unit
Following indications/levers/counters shall be given in this unit:
i) Loco, Normal, Full Service and Emergency Brake indications shall
remain lit as long as the Loco unit does not activate these brakes.
ii) Brake Isolation Lever which shall isolate all brakes in BIU.
iii) Counter to observe the number of operations of brake isolation levers.
10. Maintenance Requirements
10.1 On line self-diagnostic shall be performed automatically at regular interval in all
types of TCAS units.
10.2 TCAS units shall perform on line self-diagnostics and failure recording of the
subsystems periodically and on detection of the faults mentioned below it
shall turn to ‘Failure Mode’
♦ Failure of Power supply module
♦ Failure of CPU
♦ Software Hanging
10.3 TCAS units shall also be able to detect the failures of the subsystems and for
the following faults, shall turn the TCAS unit Not OK indication “ON”.
♦ Failure of Inputs
♦ Isolation of Brake interface unit
♦ Failure of communication (except GSM), GPS, RFID reader
10.4 Stationary unit shall detect the battery low condition and the same shall be
sent to the Centralized Management System
10.5 The Station unit shall be capable of detecting low range of radio communication
of Loco unit and shall provide a message to the Station Master.
10.6 The Loco unit in association with stationary unit shall identify low range of radio
communication of all stationary units. Loco unit shall upload this information at
the next working ‘station unit’, which in turn will communicate it to Centralized
Management System, located in the Control Office. Loco unit shall also
transmit this information to Centralized Management System through its GSM.
10.7 All the failures or sub-standard performance of TCAS, as mentioned in the
above mentioned paras, shall be communicated to Centralized Management
System located in the Divisional Headquarter.
10.8 The TCAS’ shall be networked through very reliable network.
10.9 Centralized Management System with connectivity to all Station TCAS units
&GSM interface for connectivity with Loco TCAS units shall be provided for
Monitoring, Diagnostic and Maintenance Purpose.
11. Power Supply Requirements
11.1 The DC power supply available in the locomotive (normally 72V DC in Diesel
locomotives & 110V DC in Electric locomotives/EMU/MEMU, with a variation of
-30% / +20% over nominal voltage and a ripple factor of upto 15%) shall be
used as a source of power supply for loco equipment. The power supply
module shall have suitable filtering arrangement to negate the effect of
fluctuations in the power supply& shall derive other voltages required for the
working of its sub-systems. A suitable fuse/circuit breaker protection shall be
provided as close as possible to the locomotive battery. A battery back-up of
Signal Directorate RDSO/Lucknow Page 35 of 56