Advance Signalling System-Rajbansh
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Transcript of Advance Signalling System-Rajbansh
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Advance Signalling SystemBy Rom!el Rajbansh
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Kolkata Metro : The Kolkata Metro is a mass rapid transit system serving the city of Kolkata. It was the first such form of transportation in India, opening commercial services in 1984.
Delhi Metro : Planning for the metro started in 1984, when the DDA and the Urban Arts Commission came up with a proposal for developing a multi-modal transport system for the city. The Government of India and Delhi jointly set up the Delhi Metro Rail Corporation (DMRC) in 1995. Construction started in 1998, and the first section, opened in 2002. Rolling stock 179 trains, total length of track 189.63 kilometres with 142 stations of which 35 are underground.
Bangalor Metro : Opened in 2010. And Construction started for Mumbai , Hyderabad & Chinnai Metro.
Metro Rail in India
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Signalling
• For ensuring Safe train movement
• Signalling is used for increasing line capacity
• Signaling is mean of communication to Impart Non Verbal information to Train Operator.
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Signalling Equipment
Signalling Equipment
Point Machine Track Circuit Signal CATC
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POINT MACHINE
Point means a connection used to connect one line to another for the purpose of making a movement for one line to other line
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• POINT MACHINE IN DEPOT
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• POINT MACHINE IN MAINLINE
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Point Machine: - is a signaling gear which is used for diverting train/ vehicle from one line to another.
: Point Position: - Point has two positions 1. NORMAL2. REVERSE
ELECTRIC KEY TRANSMITTER
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Point Position (Normal)
• (a) NORMAL: - means that Position of a point which is normally set for most of the trains.
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(b) REVERSE: - means that Position of a point which is not normally set for most of the trains but when operated by point machine can cause train/ vehicle to change to another line.
Point Position (Reverse)
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Track Circuit
• Track circuit is a device which is used for detecting the presence or absence of train.
• Apart from detection of train presence, it is used for SACEM (Systeme d’Aide à la Conduite à l’Exploitation et à la Maintenance ) data transmission.
TC1 TC2 TC3
Target point sent to the train to train, OCC, DCC, SCR, SER, etc.
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Track Circuit
SMARTWAY DIGITAL TRACK CIRCUITS (SDTC)SDTC cubicle, and TWC rack
RELAYS/Relay panelAll signal elements like main line signals, depot signals, point machines, shunt signals other then Track Circuits need to be proved by relays. The inputs from the field first come to the relay panel.
Power supply panel7.
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Transmission
Track to Train Transmission
Train to Track Transmission (Through DLR)
Spot Transmission (Through beacons. E.g. RB, STIB and MTIB)
Continuous Transmission (Through SDTC)
Track side ATC Equipment Track side ATC equipment communicates with the train born ATC for the safe running of the train. ATC cubicle is called 2 out of 3 cubicle (2oo3). It is SIL(Target point sent ) to the train B 4 system. The communication is two way. The Transmission between Track side and Train can be classified as
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STIB (DL/DLR- Down Link Receptor)Stationary Train Initialization Beacon
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STIB
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Antenna
RB / MTIBRe-localization / Moving Train Initialization Beacon
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Impedance Bonds
A connection box, usually mounted between the rails, which provides continuity with return signal/current.
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Signal• Cab Signal
• Fixed Signal
• Flag Signal
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Cab Signal
• Cab signal is indication provided inside Train Operator’s cab in terms of speed code.
• Proceed: Speed Code other than zero• Stop: Speed code is zero
CAB SIGNAL1ST MMI : Man Machine Interface
Odometer speed sensor0
20
40 60
80
km/h
10090
7050
30
10
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CAB SIGNAL 2nd DMI : Direct Media Interface
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1.A : Route Signal (With Route Indicator Line-1)Fixed Signal
Route indicator
1841Colour light signals in UK in the 1920s
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Fixed Signal 1.B : Route Signal
Green : Proceed : Route set , locked and the track circuits to the
next route signal are clears. (or the two blocks are clear).
Violet : Conditional proceed : Route set and locked ,and the first track circuit after the
signal is clear. (or two track circuits of the cross over). or the green aspect is failed or Route Indicator (or repeater
Route indicator is not lit if control given for it).
Red : Stop : Route not set and locked ,or the first track circuit after the
signal is occupied (or one of the two track circuits for a cross over).
60 km/h : 201 km/h
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Fixed Signal2 : Shunt Signal
• The Shunt signal has three lamps to display different indications.
• There are two types of indications.• Two lunar white horizontal lamps : Stop
(Normal, ON, restrictive aspect) Route not set and locked, or if the route includes track circuits one of them is occupied.
• Two lunar white lamps at 45°in the left-hand upper quadrant : proceed (or Clear, OFF, permissive aspect), Route set and locked ,and if the route includes track circuits all of them are clear.
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3 : Repeater Signal
• These signals have only two aspect.
–Violet–Green
FIXED SIGNAL
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Fixed Signal
4 : Buffer Stop Signal
Used at• the ends of the line ;• the ends of the siding in the line
and in the depot ;• the ends of the test track in the
depot ;• These signal permanently show
red aspect
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INTERLOCKING Interlocking means arrangement of signals, points
and other appliances operated from lever frame or panel electrically, mechanically or both in such a way that there operation must perform in proper sequence to ensure safety.
In CBI (Computer Based Interlocking) Monitor and Control Signaling Equipment Track Circuits, Points, Signals, Cycles and Routes
1980s
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System of working • CATC (Continuous Automatic Train Control)• CATC’s Subsystem :
– ATS (Automatic Train Supervision)– ATC (Automatic Train Control)– ATP (Automatic Train Protection )– ATO (Automatic Train Operation )
Related Speed . Continuous monitoring of braking. Audio visual warning and application of brakes, if necessary. Maintaining safety distance between trains. Monitoring of stopping point. Releasing doors on the correct side of the platform when train comes to a stop.
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Operation Control Centre
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Signal Set SAFE Way
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Rail Transport in India - 1849, in 1951 Nationalized , in 1853 introduced . 135,000 km Track, 60,000 Rolling stock, 20 million passengers per day.Meter gauge 1,000 mm.Narrow gauge 1,067 mm.Broad-gauge 1435 mm.Track gauge 1676 mm.
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