The document discusses the telecommunication systems used in Delhi Metro. It describes that Thales Group provides the public address system (PAS), public information display system (PIDS), and master clock system for Delhi Metro. The PAS uses loudspeakers to make announcements across stations. The PIDS shows arrival and departure times on screens. The master clock synchronizes all other clocks in the metro network. Thales systems ensure reliable and safe operations of Delhi Metro which has become a world-class metro system.

2.  Today the traffic on roads of Delhi is a heterogeneous mix of
cycles, scooters, buses, cars and rickshaws jostling with each
other. This has resulted in a chaotic situation so much so that due
to road accidents, the average number of persons killed per day
has increased to 5 and of those injured to 13, and the situation is
expected to deteriorate further in the years to come.
 To rectify this situation the Government of India and the
Government of National Capital Territory of Delhi, in equal
partnership have set up a company named Delhi Metro Rail
Corporation Ltd. under the Companies Act, 1956 which was
commissioned a 65.10 km route in Phase-I and is proceeding
ahead with another 121 km in Phase –II
 Delhi Metro is a world-class metro. To ensure reliability and
safety in train operations, it is equipped with the most
modern communication and train control system. It has
state-of-art air-conditioned coaches

3. DMRC MISSIONS :-
 To cover the whole of Delhi with a Metro Network by the year
2021.
Delhi Metro to be of world class standards in regard to safety,
reliability, punctuality, comfort and customer satisfaction.

4.  The Thales Group is a French electronics
company delivering information systems
and services for the aerospace, defence,
and security markets. Its headquarters
are in Neuilly-sur-Seine (in the suburbs
of Paris), and its stock is listed on the
Euronext Paris.
 The company changed its name to Thales
from Thomson-CSF in December 2000
shortly after the £1,300 million
acquisition of Racal Electronics plc, a UK
defence electronics group. It is now
partially state-owned by the French State,
and has operations in more than 50
countries. It has 68,000 employees and
generated €13.1 billion in revenues in
2010.
 The Group is ranked as the 475th largest
company by Fortune 500 Global is the
11th largest defence contractor in the
world and 60% of its total sales are
military sales.

5.  Thales Portugal is a Competence Centre of the Thales
Group, whose mission is to develop products for
Thales portfolio and integrate turn-key solutions for
Thales projects worldwide.
 Having around 270 specialized human resources
Thales Portugal has a strong capability to efficiently
design, develop, and deploy systems and services in
the Defence, Security (Critical Information Systems,
Critical Infrastructure and Banking) and Transportation
markets.
 Thales Portugal activities cover the following
technology domains:
 · Integrated Communication Systems
 · Signalling, Command and Control
 · Public Information Systems and Passenger Comfort
 · C4I for Defence & Security Systems
 In order to fulfill the objective of supplying a complete
quality service, assuring a presence along the entire
project life cycle, Thales Portugal operates 15
Maintenance Centres at the Portuguese domestic
market.
 The company operates two laboratories.The major lab
is, dedicated to the development, production and
testing, is equipped with a wide range of support tools
and test equipment. The secondary lab is set mainly for
acceptance, production and integration tests where
hardware and software platforms simulate the project
environment for functional and performance
evaluation.

6.  The BS15 contract for New Delhi
Metro Phase II is related with the
provision of the Public Information
& Display (PIDS), Public Address
(PAS), & Master Clock (MCK)
telecommunication systems for over
80 stations, one OCC & 4 depots.
 In 2009 an additional order had
been placed by DMRC in 2009 for
another 3 stations at New Ashok
Nagar, Kaushambi & Vaishali.
 On undertaking this work
experience programme with Thales
Portugal S.A., 79 of 83 stations were
already in revenue service, and the
OCC and depots were fully
operational, and with 4 stations in
the final commissioning stage.
 eeee

7.  It is the backbone transmission network, which shall provide the
necessary communication channels in the metro network, shall be
of high quality, and shall have high reliability, availability and
expandability
 Telecommunication system is composed of voice, data and video
systems, which will enable and support the operation and
administration of the line. The operation of a modern metro rail and
metro network requires the availability of a large set of services,
which must be supported by wired and wireless networks.
SERVICES
Telecommunication services may be divided into three main
categories:-
 Operational services
 Management services
 Passenger services

8. The basic components of a telecommunication system
are:-
 FOTS(Fibre Optics Transmission System)
 PAS(Public Address System)
 PIDS(Public Information Display System)
 Master Clock
 CCTV(Close Circuit Television)
 Radio System
 Telephone System
 NP SCADA(Non Power Supervisory Control And
Data Acquisition)

9.  A public address system (PA
system) is an electronic sound
amplification system with
amplifiers and loudspeakers,
used to reinforce a sound source
(e.g. a person giving a speech),
and distributing the sound
throughout a venue or building.
 Simple PA systems are often
used in small venues such as
school auditoriums, churches,
and small bars. PA systems with
a larger number of speakers are
widely used in institutional and
commercial buildings, to make
announcements or declare states
of emergency.

10. Major design considerations are related with:
 Train announcements
 Public announcements
 Emergency announcements
 Police investigation
 Quality of sound
 System availability

12. AUDIO ROUTING
AND CONTROL
POWER
AMPLIFICATION
SMC01G
PAS Server
SMS03
PSB Microphone
AMBIENT NOISE
SENSING

13. DSP
ROUTER
DSP Router plays an
important role in the
functioning of PAS system.
Some of its functions are:-
DSP (Digital Signal
Processing) means:-
All functions are built in.
All parameters set in
software and controllable
remotely.
Some of the DSP functions
are:
Adjustable Gain per Input
Adjustable Gain per Output
Audio Routing

14. Front Panel Controls
 User Interface:-
2x 40 LCD
BACK-LIT
DISPLAY
STATUS LEDS
KEYS FOR
NAVIGATING
THE MENUS
FAULT ACCEPT BUTTON
FAULT CLEAR BUTTON
AUDIO
MONITOR
BUTTON
LAMP TEST
BUTTON
ROTARY
ENCODER
•FAST SCROLLING OF
MENU ITEMS
•VOLUME CONTROL
FOR AUDIO MONITOR

15. Some of the properties
of a DSP Router are:-
 VAR12
 Incorporate all
commissioning and fault
display functions
 12 in x 12 out

16. Station Master’s Console (SMC)
 20 programmable zone buttons
 Fully Monitored
 Listen-In Facility
 Microphone Level Bar graph Indicator
PSB Microphone
 5 and 10 zone Microphone
 Full audio monitoring
MMI Microphone (SMS03)

17. The properties of a SMC
are:-
 Flexible Listen-in
facility; all zones or
selectable zones
 Works in all-call mode
if communications link
or router processor fails
 Microphone capsule
and all interconnections
fully monitored

18. Some of the properties
of a PSB Microphone
are:-
 5 and 10 zone
Paging microphones
 Fully monitored
audio path

19. The properties of a
MMI Microphone
are:-
 Designed to provide a live
recording facility for the
PA/PIDS Server
 Microphone capsule and
audio connection is
monitored at the VAR
Router
 Audio connection pair are
provided to the PA/PIDS
Server
 Powered from the PA
System

20. Loudspeakers are placed in
each of the PAS zones, with
adjacent loudspeakers connected
to different amplifiers, such that
if one amplifier fails then there
still exists coverage in that zone
from the other amplifier.
The types of loudspeakers used
in metro stations are:
 CELL10/TC
 RCS5/RTS
 PBC6/TC
 MWC6/TC

21.  PAS should be designed keeping in
mind the convenience of the persons
living near a metro station and the
people present at the station. During
the night, background noise level
decreases, hence if the
announcements are continued to be
made at the same volume as that of
the day time, it would be
inconvenient for the persons living
near it.
 Thales has installed noise sensors
(ANS02 & ANS04) for this purpose.
Two sensors are installed in every
zone, responsible for sensing the
level of background noise and
accordingly it may automatically
lower or raise the volume of the
announcement.

22.  In general a PIDS system is an
electronic information system
which provides real-time
passenger information. It may
include both predictions about
arrival and departure times, as
well as information about the
nature and causes of
disruptions. It may be used both
physically within a
transportation hub and
remotely using a web browser
or mobile device.
 The PIDS system from Thales is
part of an integrated PIDS/PAS
system controlled by the APIS
product developed by Thales
Portugal

23. PLATFORM DISPLAY
PANELS
CONCOURSE DISPLAY
PANELS
There are 2 double-sided,
two-line platform display
panels at the end of each
platform showing:-
 Arrival & departure messages
 Default message
The arrival and the departure
message indicates in English&
Hindi.
The default message is
configurable by the user, but
normally consists.
There are 2 single-sided
three-line platform display
panels in the concourse. It
Shows:-
 Next three Train departure
messages. The 'next three
train departure message'
indicates in English & Hindi:
 Absolute time of departure
of next three trains,
including platform &
destination

25. Station
Concourse
Concourse 1
Concourse 2
Concourse display board (3 lines)
Concourse display board (3 lines)
Platform 1
Platform 2 ……
Platform 1 ,Display 1
Platform 1, Display 2
Side 1(2 lines)
Side 2 (2 lines)
Side 1 (2 lines)
Side 2 (2 lines)

26. Station
PAS Zone 1 (Platform 1 speakers)
PAS Zone 2 (Platform 2 speakers)
PAS Zone 3 (Concourse speakers)
PAS Zone 4 (Staff zone speakers)

28. A master clock is a precision clock that provides timing signals synchronize
slave clocks as part of a clock network. The master clock in such installations
is controlled by an accurate quartz crystal oscillator, usually referenced to an
external frequency standard such as MSF, which is part of a world-wide
timekeeping system.
Master clocks are normally used in the wide network systems like metro
railways or postal etc. These clocks can synchronize all the slave clocks within
its network.
Thales provides the following facilities at OCC:
 Date & time reference for external systems of other contractors
 Date & time reference for internal systems
Thales provides the following facilities at metro stations:
 Date & time reference for external systems of other contractors
 Date & time reference for internal systems
 Date & time reference for slave digital and analogue clocks

31.  Web: http://www.thalesgroup.com
 “25 Management Strategies for a Delhi Metro’s
Success…the Sreedharan way” by Mr. Anuj Dayal
points made by Professor Biju Varkkey
 “A Journey to Remember” written by a DMRC
MD Dr. E. Sreedharan
 “A Dream Revisited” a book on an archival
journey into the making of delhi metro by anuj
dayal (chief public relation officer in a delhi metro
rail corporation ltd.)
 www.delhimetrorail.com