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INDIAN RAILWAY
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TOPICES TO BE COVERED
Introduction About Indian Railway Railway Signalling
Interlocking
Route Relay Interlocking
Microwave Transmission
Optical Fiber Communication
The Passenger Reservation System
Interactive Voice Response System
Railnet
Routers2
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THE BEGINNING
First train started in India 1853from Bombay to Thane.
1853 first railway train
journeyed distance 22 mile
Bombay to Thana.
Originally , operated by
private English companies
1925-1950 GOI took over theall private railway companies.
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SERVICES PROVIDED BY INDIAN
RAILWAY
Indian railway operates both long distance and
suburban rail system.
It owns locomotive coach production facilities
at several places in India.
Its operations cover twenty eight states and
three union territories.
It also provides limited international services
to Nepal ,Bangladesh and Pakistan.
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DEPARTMENT OF INDIAN RAILWAYS
DIVISION RAILWAYMANAGERS
SIGNALE &TELECOMMUNICATION
DEPARTMENT
PLANNING &QUALITYDEPARTMENT
SAFTEY &MAINTENANCEDEPARTMENT
RESERVATION &ACCOUNTS
DEPARTMENT
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RAILWAY SIGNALLING
Railway signalling is a system used to control
railway traffic safely.
CBTC is a railway signalling system that makes use
of the telecommunications between the train and trackequipment.
By means of the CBTC systems, the exact position of
a train is known more accurately than with thetraditional signalling systems.
This results in a more efficient and safe way to
manage the railway traffic.
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RAILWAY SIGNALLING SYSTEM
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INTERLOCKING
Earlier signalmen were responsible for ensuring anypoints (US: switches) were set correctly beforeallowing a train to proceed.
Mistakes were made which led to accidents.
The process in which Points and signals at junctionsoperate in harmony to ensure that no unsafe movesare set up is known as Interlocking.
The concept of the interlocking of points, signals and
other appliances was introduced to improve safety This prevents a signalman from operating appliances
in an unsafe sequence.
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The station is interlocked by means of RRI and
worked with control Panel located in the RRI cabin.
Station is provided with multiple aspects color
light signals and electric machine operated points.
The entire operation of interlocked points and
signal for reception and departure of trains is done
through Control Panel by signal man on duty. Signal man is responsible for correct & safe
working of trains.
ROUTE RELAY INTERLOCKING
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ROUTE RELAY INTERLOCKING
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MICROWAVE TRANSMISSION
Microwave transmissionrefers to technology oftransmitting informationor energy by the use ofmicrowaves
Microwaves are widelyused for point-to-pointcommunications
Microwave transmissionis a type of unguidedtransmission
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Indian railway has
allocated frequencyband of 7.125 GHz to
7.425 GHz
Typical microwave
communication linkspeeds are 1-10 Mbps
A disadvantage is that
microwaves are limited
to line of sight
propagation
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MICROWAVE TRANMISSION
SYSTEM
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OPTICAL FIBER COMMUNICATION
Optical fiber transmission is used mainly in guided
transmission of a signal
Optical fiber communication is a method of
transmitting information from one place to another bysending pulses of light through an optical fiber
Wavelength-division multiplexing (WDM) is the
practice of multiplying the available capacity of
optical fibers through use of parallel channels, each
channel on a dedicated wavelength of light
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OPTICAL FIBER CABLE
Optical fiber is located atthe center of the cable
An special silicone coating
is applied outside the
cladding to preserve the
fibers strength
The protective coating is
surrounded by buffer jacket Finally entire cable
assembly is contained in an
outer polyurethane jacket15
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OPTICAL FIBER
An optical fiber is a flexible, transparent fibermade of glass (silica) or plastic
Optical fibers typically include a transparent
core(8 m)surrounded by a transparentcladding(125 m) material with a lower index
of refraction. Light is kept in the core by total
internal reflection16
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THE PASSENGER RESERVATION
SYSTEM
The Passenger Reservation System (PRS) iscomputerized reservation system for any trainfrom anywhere in country
This system has made the train journey quitecomfortable
When PRS system was not developed a stationcould give the reservation to the customer
Those train which get started from their stationbut after PRS get installed the customer can getinformation about any train running in India
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THE PASSENGER RESERVATION SYSTEM18
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Interactive Voice Response System
The IVRS is the arrangement of a computer and a
telephone set.
In this system interactive between telephone andcomputer are done and the results are in the form of
voice.
In railway it is used in online train informationsystem and passenger reservation enquiry system.
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Interactive Voice Response System20
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RAILNET
Rail net is nothing but an interconnection and
infrastructure medium of different railway zone and
division in the Indian railway
The rail net is a railway open system for quick datatransmission and data using resources at different
places
It is purely under railway and information and data
are collected at the headquarter through different
divisions and unit
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ROUTERS
Routers are small physical
devices that join multiple
networks together.
They use protocols such as ICMPto communicate with each other
Technically, a router is a Layer 3
gateway device.
Meaning that it connects two or
more networks.
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CONCLUSION
I have learned about process of railway
signaling and controlling railway network
I have also learned about process like
interlocking and systems like PRS
I have also observed the atmosphere in which
engineers of Indian railway works
Overall it was a great experience during the
training period
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REFERENCES..
www.indianrailway.gov.in
www.indianrail.gov.in
http://searchtelecom.techtarget.com
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