Anti collision devices

Mechanical engineering topic

1. JAYAWANT SHIKSHAN PRASARAK MANDAL’S R.S.S.O.E.R., NARHE TECHNICAL CAMPUS.   SEMINAR ON: “Anti collision devices in trains”   GUIDED BY: PROF. S.M. KARLEKAR   SUBMITTED BY: MR. ABHISHEK L. BALLAL

2. ANTI COLLISION DEVICES IN TRAIN

3. What Is Anti Collision Device? Anti Collision Device (ACD) is a fully integrated Electronic Control System designed to minimize collisions and increase safety on Railway system. It is a non signaling system and provides additional cover of safety in train operations to prevent dangerous train collisions caused due to human errors or limitations and equipment failure. Being the non- signaling and inter locking system it does not replace any existing signaling and interlocking system and does not alter any procedures of train operations in vogue. The ACD uses both radio frequency and Global Positioning System (GPS) through satellites, whereby a train is automatically brought to a halt if the track ahead is not clear. The train starts braking 3 kms ahead of a blockade.

4. Who Invented Anti Collision Device:- The ACD Network is a Train Collision prevention system invented by Rajaram Bojji and patented by  Konkan Railway Corporation  Limited (A Public Sector Undertaking of  Ministry of Railways ,  Government of India ). Another design different to ACD was patented in 2001, named " Railway Collision Avoidance System" by an Indian inventor, Indranil Majumdar  from Calcutta who was awarded the Texas Instruments Analog Design Challenge 2001 for this design and the patent granted in 2007 ( India Patent no. 201106 ).

5. Working Of Anti Collision Device:-

6. Technology Used In Anti Collision Devices:- The heart of the ACD is an Intel 80386 processor that uses the DM&P M617 Intel chipset. It [ACD] has an integrated digital radio modem and works on the VxWorks Real Time Operating System (RTOS).

7. The Following Accident Cases Are Prevented By A.C.D:-

8. Accidents Prevented:- Year Prevented Accidents April 1997 To January 2000 82% 2000 -2001 464 2005-2006 234 2006-2007 195

9. Network Of A.C.D In India:- More than 2,000 Anti Collision Devices have already been installed over 2,700 Route Kms of track on Indian Railway system. Out of this 2,700 Kms about 1900 Route Kms are on North east Frontier Railway and balance are on Konkan Railway. Further installation of this safety device on the balance network of Indian Railways is being planned.

10. Benefits Of Anti Collision Device:- Very economical and cost effective. Easily adaptable and expandable. Does not degrade the existing safety level. No cabling on the track required which is more expensive. It does not require any inputs to be fed by the crew at the start of journey, thus human error is eliminated. No any side equipment required, hence no requirement of Power. Daily Maintenance Report of Failure of Loco Unit and Gate Unit.