Tender invited for Development of Train Collision Avoidance System
Tender invited for Development of Train Collision Avoidance System
Tender invited for Development of Train Collision Avoidance System
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ISO 9001: 2008 Effective from 18.06.2012 RDSO/SPN/196/2012 Version 3.1.1<br />
Document Title : Specification <strong>of</strong> <strong>Train</strong> <strong>Collision</strong> <strong>Avoidance</strong> <strong>System</strong><br />
Nominal Direction Reverse Direction<br />
Remarks<br />
X15 X14 X13 X12 X11 X10 x9 x8 x7 x6 x5 x4 x3 x2 x1 x0<br />
0 0 0 0 TCAS Territory Exit<br />
0 1 0 1 TCAS Block Section ahead<br />
1 0 1 0 TCAS Station Section ahead<br />
1 1 1 1 Spare<br />
Neither Converging nor<br />
0 0 0 0 diverging (Not near turnout)<br />
0 1 0 1 Converging at Turnout<br />
1 0 1 0 Diverging at Turnout<br />
1 1 1 1 Spare<br />
1 1 ABT/MBT allowed<br />
0 0 ABT/MBT not allowed<br />
No single Signal identified<br />
0 0 0 0 0 0<br />
ahead<br />
Approaching Stop Signal<br />
0 0 1 0 0 1<br />
approx. 3000m ahead<br />
Approaching Stop Signal<br />
0 1 0 0 1 0<br />
approx. 2000m ahead<br />
Approaching Stop Signal 100-<br />
0 1 1 0 1 1<br />
200m ahead<br />
Approaching Stop Signal 70-<br />
1 0 0 1 0 0<br />
100m ahead<br />
Approaching Stop Signal 50-<br />
1 0 1 1 0 1<br />
70m ahead<br />
1 1 0 1 1 0 Spare<br />
1 1 1 1 1 1 At Stop/Permissive Signal Foot<br />
6.7. When Loco unit RFID reader passes over RFID tag, RFID tag shall transmit the<br />
above in<strong>for</strong>mation(described in Cl. 6.6) to RFID reader. The horizontal range <strong>of</strong><br />
RFID reader shall not be more than 750mm.<br />
6.8. Loco unit shall calculate the location <strong>of</strong> the train between two RFID tags<br />
dynamically based on the speed sensor input & wheel diameter.GPS input <strong>for</strong><br />
this purpose shall be used as fall back only in case <strong>of</strong> non-availability <strong>of</strong> Speed<br />
Sensor input.<br />
6.9. The RFID tags at all locations shall be duplicated & shall have identical<br />
in<strong>for</strong>mation.<br />
6.10. Loco unit shall act as per the in<strong>for</strong>mation received from even one RFID tag out<br />
<strong>of</strong> duplicated tags. However, in such case, it shall log the missing RFID tag &<br />
transmit the same to Central server.<br />
6.11. On not receiving any in<strong>for</strong>mation from RFID tag either due to both tags missing<br />
or due to any other reason, at the expected location with an error <strong>of</strong> +10<br />
meters+ odometry recalibration and the Movement Authority is not available,<br />
the Loco unit shall go in ‘Controlled’ mode till it gets the in<strong>for</strong>mation from next<br />
RFID tag.<br />
Signal Directorate RDSO/Lucknow Page 24 <strong>of</strong> 56
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