18-05-2012, 04:04 PM
A cost effective system for Railway Level Crossing Protection
A cost effective system for Railway Level Crossing Protection.ppt (Size: 4.51 MB / Downloads: 40)
Gate Accidents - A ‘Challenge’ Accepted
Based on ‘Radio communication’, ‘Microprocessors’ and ‘Global Positioning System (GPS)’ technology, the Anti-Collision devices at Level Crossing Gates and on board Locomotives can apply brakes and/or alarm the crew of the Train to apply brakes in time, in case the Gate is open to road traffic or the track area is obstructed by any vehicle.
‘ACD’ – A Solution against ‘Collision’ found…
Anti-Collision Device (ACD) – A KRCL ‘Patent’
Unique features – Prevents in a ‘mid-section’
‘Head-on’ Collisions
‘Side’ Collisions
‘Rear-end’ Collisions
Accidents at Level Crossings
No other Technology in the World supports above features
‘ACD’ – Testing and validation
Anti-Collision Device (ACD) – It has been validated by Electronic Test & Development Centre, Chennai, India.
The product is tested and inspected by Lloyd Register Asia (LRA, India) before dispatching to the site.
ETDC Website: www.stqc.nic.in
LRA Website: www.lr.org
GPS based wireless Level Crossing Protection System
A subset of ACD system with limited functionality of Level Crossing protection
Consists of Gate and Loco units with redundant radio modems
Repeaters required for ensuring communication in the defined zone of 3Km.
Salient Features - What the system does
‘Train Approach’ Warning for road users at Level Crossings in the form of Audio Visual indication
Detection of obstruction by road vehicle at level crossing
Detection of Gate condition whether it is OPEN or CLOSED?
Advance audio visual information to the train crew regarding the condition of the gate as detected by the Gate ACD.
Gate protection system CAN NOT Prevent a Train Collision when…
The Train is a ‘NON’ ACD Train or Gate is not provided with Gate ACD – ACD functions by reacting to another ACD, as such if one of the two identities is not provided with ACD, the protection against collision will be missing
‘Adequate’ braking distance at that speed is not available when a ‘dangerous’ collision-like situation arises suddenly – However, severity of the collision would be reduced as a function of the reaction time
Scenario - Gate Approach
Train approaches the Gate ST 346 At approximately 2000m from the Gate ‘Gate Approach’ message and audio buzzer appears for 10 seconds
Scenario – Gate OPEN
Level Crossing Gate ST 346 is detected to be OPEN – Audio Visual Indication is automatically activated to draw the attention of the Driver and brakes are applied to reduce the speed to 15 Km/h.
Scenario – Gate occupied
Level Crossing Gate ST 346 is detected to be occupied by the road vehicle - Audio Visual Indication is automatically activated to draw the attention of the Driver and brakes are applied to reduce the speed to 15 Km/h.
System Adaptability
Loco Unit can be provided in any type of Diesel or Electric Locomotive
The Auto Braking Unit (ABU) is suitable for Air Brake/Vacuum brake/Computerised Control Braking systems
Level Crossing Unit can be installed at any type of Gate working system to detect OPEN/CLOSE condition of gate
Loco and Level Crossing Units are capable of withstanding -10 deg C to +70 Deg C temp variation
System Benefits
It does not require any inputs to be fed by the crew at the start of journey, thus human error is eliminated.
Very economical and cost effective
Easily adaptable and expandable
Does not degrade the existing safety level
Employs state-of-art hardware and software technology
No way side equipment required, hence no requirement of Power
No cabling on the track required (which is more expensive and cumbersome)
Less susceptible to Vandalism.
GPS based wireless gate protection system Implementation Plan
Survey & Route Design
Manufacturing and Installation of Units with accessories
Commissioning of individual Loco & Gate Unit installations
Training of Personnel
Configuration & Customization of the route
Commissioning of the Route
Post warranty Annual Maintenance (if required)
NOTE - System can be implemented in 1000 RKm track within one year after the order is received. This excludes installation in Locomotives which takes 12 hrs for each Locomotive at the shed.
Maintenance Support System (MSS)
Daily Reports of incidences of Warning to the Driver due to Gate OPEN or Obstruction
Date wise Report of incidences of Warning to the Driver due to Gate OPEN or Obstruction
Daily Maintenance Report – Failure of Loco Unit and Gate Unit
Date wise Maintenance Report – Failure of Loco Unit and Gate Unit