an analysis of effective wagon tracking for indian railways using rfid technology
DESCRIPTION
MBA thesisTRANSCRIPT
AN ANALYSIS OF EFFECTIVE WAGON TRACKING
FOR INDIAN RAILWAYS USING RFID
TECHNOLOGY
By
ANKUR RASTOGI
S-9
MASTER OF BUSINESS ADMINISTRATION
FACULTY OF MANAGEMENT STUDIES
UNIVERSITY OF DELHI
NEW DELHI
March 2011
AN ANALYSIS OF EFFECTIVE WAGON TRACKING
FOR INDIAN RAILWAYS USING RFID
TECHNOLOGY
Submitted in partial fulfillment of the requirement for the Degree
of
MASTER OF BUSINESS ADMINISTRATION
By
ANKUR RASTOGI S-9
Under supervision of
Dr. M. L. SINGLA
PROFESSOR
FACULTY OF MANAGEMENT STUDIES
UNIVERSITY OF DELHI
FACULTY OF MANAGEMENT STUDIES
UNIVERSITY OF DELHI
NEW DELHI
MARCH 2011
ABSTRACT
AN ANALYSIS OF EFFECTIVE WAGON TRACKING FOR INDIAN
RAILWAYS USING RFID TECHNOLOGY
Indian Railways (IR) has the largest rail network in Asia and is the world's third largest
under one management. IR transport 20 million passengers, 11,000 trains and more than
2.2 million tons of freight daily. It is the world's fourth largest freight carrier, with more
than 1.6 million employees. IR traverses the length and breadth of the country, covering
10,350 stations over a total route length of more than 1,08,706 kilometers. On account of
its rolling stock, IR owns over 2,50,000 wagons, 50,000 coaches and 8,000 locomotives.
IR has 35% share in the freight traffic. Freight business is the biggest source of income,
70% of the revenues and most of its profits come from the freight sector.
In the present day scenario, the need to accurately track freight wagons has become more
pronounced for the Indian Railways. With better roads infrastructure, trucks cargo
services are competing fiercely with IR for freight traffic. Wagon leasing organizations
want online information about their assets. Customers demand guaranteed transit times.
To increase Railway's share in the freight movement, IR requires adopting new
technologies with a view to satisfy the specific needs and helping the customers reduce
their logistics costs.
Any further increase in physical capacity of the wagons is now difficult to achieve, so
newer and more efficient methods are required to enhance the utilization of the existing
wagon capacity. This again translates into a need for more accurate monitoring of wagon
movement so as to reduce turnaround time.
This project tries to examine the role of RFID technology from the perspective of IR for
improving the effectiveness of existing system to ensure efficiency, safety and provide
better customer satisfaction. Attempt is also made to identify the appropriate RFID tags,
suitable for varied geographic locations and diverse weather conditions across India.
CERTIFICATE
This is to certify that this Project Report titled “An Analysis of Effective
Wagon Tracking for Indian Railways using RFID Technology” submitted in
partial fulfillment of the requirements for the Degree of Master of Business
Administration, is based on the original research work, conducted under the
guidance of Dr. M. L. Singla, Professor, Faculty of Management Studies,
University of Delhi, and no part of this work has been copied from any
source. Any material referred or borrowed has been duly acknowledged.
(Dr. M. L. Singla) (Ankur Rastogi)
Professor
Faculty of Management Studies
University of Delhi
New Delhi
ACKNOWLEDGEMENT
This project has been performed by me under the able, inspiring and appreciable
guidance of my revered supervisor and teacher Dr. M. L. Singla, Professor, Faculty of
Management Studies, University of Delhi, New Delhi. I am deeply obliged to him for his
valuable advice and suggestions, without which, it would not have been possible for me
to bring this report in the present shape.
I wish to mention my sincere gratitude towards Mr. S. S. Mathur, General Manager,
Centre for Railway Information Systems (CRIS), for being gracious enough to share with
me the official records and technical documents pertaining to this project work.
I would like to acknowledge the unflinching support of Ms. Guljeet Grover, Senior
Additional General Manager, CRIS, for her blessings and encouragement.
I also thank all my seniors and colleagues at CRIS. I would also like to make a special
mention of Mr. Manish Kumar, Chief System Manager, CRIS, for providing invaluable
inputs for completion of this project work; and Mr. Satya P. Panigrahi, Chief System
Manager, CRIS, for his consideration and cooperation in helping me to continue my
studies, along with the official duties and responsibilities assigned to me.
Last but not the least, I thank to the entire distinguished faculty members of Faculty of
Management Studies (FMS), University of Delhi, who cultivated in me the right spirit of
learning and research. I thank them all for making my experience in FMS even more
enjoyable and worthwhile.
(Ankur Rastogi)
LIST OF ABBREVIATIONS
AAR American Association of Railroads
AIDC Automatic Identification Data Collection
AIM Automatic Identification and Mobility
ANSI American National Standards Institute
ATA Air Transport Association
AVI Automatic Vehicle Identification
CPFR Collaborative Planning Forecasting and Replenishment
CRIS Centre for Railway Information Systems
EAN European Article Numbering International
EAN European Article Numbering Association International
EPC Electronic Product Code
FCC Federal Communications Commission
FOIS Freight Operations Information System
GCI Global Commerce Initiative
GDS Global Data Synchronization
HF High Frequency Band
IR Indian Railways
ISO International Standards Organization
IST Information Society Technologies
IT Information Technologies
NFC Near Field Communication
OCR Optical Character Recognition
POP Point of Presence
RDSO Research Designs and Standards Organisation
RF Radio Frequency
RFID Radio Frequency Identification Device
ROI Return on Investments
UCC Uniform Code Council
WILD Wheel Impact Load Detector
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 1
Contents Abstract (i)
Certificate (ii)
Acknowledgement (iii)
List of Abbreviations (iv)
1 INTRODUCTION ....................................................................................................................................... 4
2 ABOUT INDIAN RAILWAYS ...................................................................................................................... 6
2.1 Responsibilities and Challenges .................................................................................................... 6
2.2 IT initiatives of Indian Railways ..................................................................................................... 7
2.3 About Centre for Railway Information Systems (CRIS) ................................................................. 7
2.4 Need of RFID in Indian Railways .................................................................................................. 11
2.5 RFID implementation SWOT ANALYSIS ....................................................................................... 13
3 ABOUT RFID .......................................................................................................................................... 15
3.1 Automatic Identification ............................................................................................................. 15
3.2 The Basics of RFID ....................................................................................................................... 15
3.3 A brief history of RFID ................................................................................................................. 16
3.4 Tags and Readers ........................................................................................................................ 17
3.4.1 Active Tags ......................................................................................................................... 18
3.4.2 Passive Tags ....................................................................................................................... 18
3.5 RFID and other Identification Technologies ................................................................................ 18
3.5.1 RFID, Smart Cards and Other Form Factors ....................................................................... 18
3.5.2 RFID and Barcodes ............................................................................................................. 18
3.6 RFID Global Standards ................................................................................................................. 21
3.6.1 EPCglobal ........................................................................................................................... 21
3.6.2 Global Data Synchronization ............................................................................................. 21
3.6.3 International Organization for Standardization (ISO) ........................................................ 22
3.6.4 AIM Global ......................................................................................................................... 22
3.7 Uses of RFID ................................................................................................................................ 23
4 RFID UPDATE ON INDIAN RAILWAYS .................................................................................................... 26
4.1 Genesis of the Pilot Project ......................................................................................................... 27
4.2 RFID Pilot project ........................................................................................................................ 27
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 2
4.3 Challenges faced and progress made ......................................................................................... 33
4.4 Current Status ............................................................................................................................. 33
4.5 Potential Challenges in RFID Implementation ............................................................................ 34
5 OBSERVATION AND ANALYSIS .............................................................................................................. 36
6 CONCLUSION ......................................................................................................................................... 40
7 RECOMMENDATIONS ........................................................................................................................... 42
7.1 Further Recommendations ......................................................................................................... 43
7.2 Limitations ................................................................................................................................... 44
8 ACTION PLAN FOR IMPLEMENTATION ................................................................................................. 46
9 FUTURE EXPANSIONS ............................................................................................................................ 49
REFERENCES ................................................................................................................................................ 51
APPENDIX – I ................................................................................................................................................ 53
APPENDIX – II ............................................................................................................................................... 54
APPENDIX – III .............................................................................................................................................. 58
APPENDIX – IV ............................................................................................................................................. 67
ANNEXURE - I ............................................................................................................................................... 69
ANNEXURE – II ............................................................................................................................................. 70
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 3
INTRODUCTION
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 4
1 INTRODUCTION
The transportation medium used to be the backbone of any country’s economy. Indian Railways
undoubtedly is the backbone of public transport in India. With unprecedented growth in
Information Technology, the world has now moved to an era where information transport has
become the most dominant indicator of a country’s economy.
Since 2008, Indian Railways has embarked to deploy the technology for online automatic vehicle
identification which allows the moving vehicle to be correctly identified and reported to traffic
monitoring IT applications.
This report presents the current status of the RFID pilot project and suggests solutions for
integration in a seamless and effective system, which can be extended further to cater for future
growth.
Key objectives of this study include:
o Examining the role of RFID technology, for improving the effectiveness of existing
system, to ensure efficiency, safety and customer satisfaction
o Identification of appropriate RFID technology, suitable for varied geographic locations
and diverse weather conditions across India
o Providing mechanism for automatic tracking of consignments without human interaction
The methodology adopted for the study is as follows:
o Study of the present state of RFID usage in the Indian Railways and define an objective to
be achieved by deployment of such technology
o Study of the benchmark systems that has to be integrated for the vehicle identification
o Identify the possible solutions to achieve tight and preferably seamless integration
between vehicle identification and the existing system
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 5
ABOUT INDIAN RAILWAYS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 6
2 ABOUT INDIAN RAILWAYS
Indian Railways (IR) has the largest rail network in Asia and is the world's third largest under one
management, transporting 20 million passengers, 11,000 trains and more than 2.2 million tons of
freight daily. It is the world's fourth largest freight carrier, with more than 1.6 million employees.
IR traverses the length and breadth of the country, covering 10,350 stations over a total route
length of more than 1, 08,706 kilometers. Regarding about the rolling stock, IR owns over 2,
50,000 wagons, 50,000 coaches and 8,000 locomotives. IR has 35% share in case of freight
traffic. On account of earnings, 70% of the revenues and most of its profits come from the freight
sector.
With ever increasing number of people and goods that use Indian Railways, the cost of
maintenance and expansion of existing infrastructure is burgeoning. Being a medium of mass
transport the railways cannot afford to increase its fare to keep up with its growing expenses.
2.1 Responsibilities and Challenges
In the present day scenario, the need to accurately track freight wagons has become more
pronounced for the Indian Railways. With better roads infrastructure, trucks cargo services are
competing fiercely with IR for freight traffic. Wagon leasing organizations want online
information about their assets. Customers demand guaranteed transit times. To increase Railway's
share in the freight movement, IR requires adopting new technologies with a view to satisfy the
specific needs and helping the customers reduce their logistics costs.
Any further increase in physical capacity of the wagons is now difficult to achieve, so newer and
more efficient methods are required to enhance the utilization of the existing wagon capacity.
This again translates into a need for more accurate monitoring of wagon movement so as to
reduce turnaround time.
There is an urgent need therefore, to look for ways to cut down its expenses, increase its
efficiency, and look for additional measures to provide better customer satisfaction sources of
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 7
revenue, which will ensure that Indian Railways continues to provide a better service to Indian
masses.
2.2 IT initiatives of Indian Railways
Today, Indian Railways is one of the most efficient government-controlled organizations in India.
It houses one of the most brilliant engineers and administrators in the country. This is the reason
it has continued to remain at the center-stage at the India’s economic development.
Until recently (before Information Technology revolution), any country’s economy heavily
depended on how effective the transportation medium of that country was. And, Indian Railways
have continued to serve the Indian masses well, despite increasing burden.
However, looking from the perspective of current state of the technology available in the world,
current modes of operations in Indian Railways can be vastly improved with further
computerization.
2.3 About Centre for Railway Information Systems (CRIS)
In 1986, the Ministry of Railways established the Centre for Railway Information Systems
(CRIS) at New Delhi. CRIS has been set up as an umbrella unit for all IT-related activities in
Indian Railways. It is a project-oriented organization, with the mandate to develop and
implement IT systems, ensure standardization of computer hardware and software, and also
ensure close coordination of IT and business goals.
Important Indian Railways IT projects being handled by CRIS
1) Freight Operation Information System (FOIS)
FOIS has been designed to give strategic advantages to both Indian Railways and its customers.
The system is implemented to perform the following functions:
Monitoring of all freight trains indicating their position in computerized territory and their
expected time of arrival at destination
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 8
Commodity wise flow of freight trains for customers like Power Houses, Refineries,
Fertilizers and Cement Plants, Steel Depots and Public Freight Terminals
Enable the recipients of consignments to have an accurate forecast of cargo arrivals giving
them adequate time to complete preparatory arrangement to handle the cargo
Details of rakes/Wagons in various yards, their phase-wise detention in different terminals
thus eliminating the need for costly manual documentation and tedious retrieval systems and
inaccuracies
Managerial reports regarding availability of rolling stock, i.e. wagons and locomotives at any
instant of time to plan for their most efficient utilization
2) Passenger Reservation System (PRS)
A countrywide online passenger reservation and ticketing system, is a complex online distributed
client server application developed in C and Fortran programming languages on Digital
OpenVMS operating system using RTR (Reliable Transaction Router) as middleware.
CONCERT (COuntry-wide Network of Computerised Enhanced Reservation & Ticketing)
interconnects the five regional computing systems at New Delhi, Mumbai, Kolkata, Chennai and
Secunderabad into a National PRS grid. It allows a passenger from any location to book train
tickets from any station to any station. It handles reservations, modifications, and cancellations /
refunds.
3) Unreserved Ticketing System (UTS)
UTS constitutes a major component of the IR’s overall ticketing volume and is an important
source of revenue. UTS delivers fast and efficient unreserved ticketing from dedicated counters
replacing manual Printed Card Tickets/EFTs/BPTs with centralised online sales accounting. The
solution architecture lends itself to easy integration with handheld terminals, smart cards,
automatic vending machines, etc.
4) Web Enabled Claims
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 9
The web-based software enables the general public to not only file claim cases through the web
but also track the progress of their claims. All the rules and regulations for claims and accident
case filing along with contact details of all claims offices are available on the website.
5) Rail Budget Compilation System (RBCS)
Developed for budgetary inputs from the different zones and production units of the Indian
Railways, RBCS facilitates capturing of data, building of database, analysis of demands and
pruning of the estimates for inclusion in the Railway Budget.
6) Vigilance Software System (VSS)
VSS is designed especially for the requirements of Vigilance on Indian Railways and has been
implemented in all the Zonal Railway Headquarters. VSS maintains information on vigilance
cases / complaints including various reports and correspondence.
7) Material Management Information System (MMIS)
This package is designed specifically for the requirements of stores accounting for P-Way
materials and scrap disposal.
8) Comprehensive Accounting & Transaction System (CATS)
CATS has been designed with a common database to address functionalities for personnel and
Finance Departments. CATS contain two major modules: Financial Accounting System (FAS)
and Payroll System (PS).
9) Workshop Information SystEm (WISE)
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 10
WISE is a MIS project for the various railway workshops around the country. Currently it is in
operation in 15 workshops, viz. Kharagpur, Jagadhari, Ajmer, Kota, Charbagh, Liluah,
Kacharapara, Matunga, Lower Parel, Parel, Bhusawal, Jhansi, Secundrabad, Lallaguda, Jamalpur.
WISE is currently maintained by the group Project-II and provides managerial reports to the
various managements. The project utilizes the ORACLE DBMS.
10) Railway Crew Management (CMS)
CMS is software which provides information regarding railway crew at all times. It provides
information regarding the presence of crew at home station or at out station, maintains their
status-wise records and assigns crew to trains.
It also maintains information regarding the periodic and other rests, Road Learning & Traction
knowledge. It is capable of booking crew on Coaching, Shunting, Freight services in the form of
Links and Rosters.
The software system has tools to support the safety monitoring of the crew by it nominated
Inspectors, monitoring of the crew knowledge through Quiz and has capacities to make the crew
read the latest safety circulars put into the system for reading by the crew.
11) Control Office Application (COA)
COA is software which provides a solution for the rail traffic Controllers of each division to
manage the trains running over the track. This project is running in more than 30 of the 70
Control offices in the Indian Railways. The COA application is interfaced with other applications
such as the National Train Enquiry System (NTES) to provide train running information to the
passengers and other railway managers.
12) E-Procurement system
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 11
It provides a secure, fair and transparent method of procurement of material by the Railways
through a web-based interface. This system is presently in operation in a few units of IR, and is to
be expanded in the near future to all units of IR.
2.4 Need of RFID in Indian Railways
The need to use automated means to track railway wagons was first experienced in the Indian
Railways as early as the 1970s. At that time, it was thought that manual tracking method would
not be suitable in future, due to the increase in freight traffic. This increase in freight traffic was
also the indicator of the beginning of increase of economic activities in India.
Around this time, computerized systems for managing freight railways were at an incipient stage
in railway systems around the world. In 1997, a completely re-written, indigenously developed
version of the Freight Operations System was conceived. It was rolled out between 1999 and
2004. It enabled the tracking of wagon consists, as well as individual freight wagons.
However, there was one serious lacuna in the system: individual wagon identification numbers
were not automatically captured, but were recorded manually. Not only was manual recording
tedious and stressful for the staff, but it introduced errors in the Freight Operations System’s
database, and introduced delays in the tracking process.
This cost could potentially be reduced with the adoption of technology. Further, there are also
cost and time savings in elimination of errors through automated tracking. Moreover, in the
present day scenario, the need to track individual freight wagons accurately has become more
pronounced for the Indian Railways.
Highways have improved, so trucks compete fiercely with rail for freight. Organized logistics
chains have emerged that need real-time shipment-related information; just-in-time inventories
have become common in industry; wagon leasing organizations want online information about
their assets; and most customers demand guaranteed transit times.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 12
Figure 1: Freight transport in India in the year 2007
Source: Mckinsey
Also, the increase in the number of freight wagons is not keeping pace with the growing freight
traffic. In recent years, a combination of newly replaced track and modern wagon designs has
enabled axle loads (and hence the loading capacity of each wagon) to be increased significantly
on major routes of the Indian Railways.
This has helped the Indian Railways to increase its freight loading by about 9% each year. Any
further increase in physical capacity of the wagons is now difficult to achieve, so newer and more
efficient methods are required to enhance the utilization of the existing wagon capacity.
This again translates into a need for more accurate monitoring of wagon movement so as to
reduce turnaround time.
To achieve this, a technology for automatic tracking of individual wagons has become
imperative. While this need appears to be indisputable, the methods to be adopted to accomplish
such tracking are disputed by some important stakeholders within Indian Railways, delaying the
adoption of suitable technology.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 13
Automatic vehicle identification is a vital and basic requirement of any IT application for asset
management and maintenance management. Although a number of technology solutions are
available for meeting this requirement, a survey of the deployment on various railways of the
world indicates that RFID based AVI is widespread due to better read rates, lesser errors and
ability to function in day and night under all weather conditions.
Research Designs and Standards Organisation (RDSO), in 2006-07, had explored use of RFID
based vehicle tags. The results of this exploration were published as an article, copy of which is
placed at Annexure III: AVI with RFID A first hand experience.
2.5 RFID implementation SWOT ANALYSIS
WEAKNESS
o RFID is suitable for identifying the
rolling stocks only
o Trust Issue: vulnerable image of
RFID
o Equipment still expensive for mass
scale roll out
o Lack of well established standards
OPPORTUNITY
o Increased efficiency of production,
trade & services
o Customer satisfaction
o Automated monitoring
o Has potential to integrate
seamlessly with WILD project
THREATS
o High initial & transition costs
o Rapid technological evolution may
displace the technology before it is
widely adopted
o If not implemented properly, there
is a risk of missing real benefits
STRENGTH
o RFID provide better read rates
o Has lesser chances of error
o Has ability to function day & night
o Suitable for all weather condition
o RFID tags has longer life
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 14
ABOUT RFID
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 15
3 ABOUT RFID
RFID stands for Radio Frequency IDentification. Among emerging technologies, RFID is
gaining popularity due to its implementation advantages. It is a generic term for technologies that
use radio waves to automatically identify individual items.
There are different methods to identify objects using RFID technology. The most common is to
store a serial number that identifies an item / product and other information on a microchip that is
attached to an antenna (the chip and the antenna together are called an RFID transponder or RFID
tag).
3.1 Automatic Identification
Automatic identification is a broad term used for a group of technologies that help machines
identify objects and capture data.
Companies want to identify items/products automatically, extract information from them and
process it directly to a computer without having employees manually type out the data.
The aim of using these auto-ID technologies is to increase efficiency, reduce typographical errors
and so free up staff to perform more value added functions.
A number of technologies that fall under the auto-ID umbrella are bar codes, smart cards, optical
character recognition (OCR), radio frequency identification (RFID), among others.
3.2 The Basics of RFID
Automatic identification (auto ID) technologies help machines or computers identify objects by
using automatic data capture. RFID is one type of auto ID technology that uses radio waves to
identify, monitor, and manage individual objects as they move between physical locations.
Although there are a variety of methods for identifying objects with RFID, the most common
method is by storing a serial number that identifies a product and its related information. RFID
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 16
devices and software must be supported by an advanced software architecture that enables the
collection and distribution of location-based information in real time.
Figure 2: A schematic diagram of an RFID system
The antenna enables the chip to transmit the identification information to a RFID reader. The
RFID reader converts the radio waves returned from the RFID tag to a form that can then be
passed on to computers, which make use of it.
Standard frequency for RFID devices in India is 865-867 MHz with 4 W erp power. This
standard was approved in May 2005.
3.3 A brief history of RFID
RFID was developed out of the radar experiments and development during the Second World
War. The actual date of invention is 1948, but this was followed by decades of development and
experimentation before commercial applications were implemented.
In July 1963, a passive RFID transponder developed and patented by Richardson, the device
could couple and rectify from an interrogator’s EM field and transmit signals at a harmonic of the
received frequency.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 17
In January 1967, Vinding developed a simple and inexpensive interrogator transponder system
based on inductive coupling, the transponder used repetitive tuning or loading of its antenna
circuit at a rate characteristic of the particular under interrogation. In august 1975, Koelle, Depp
and Freyman introduced the novel concept of transponder antenna load modulation as a simple
and effective way for backscatter modulation.
In the late of 1960’s, the first commercial application of RFID – Electronic Article Surveillance
was developed by companies such as Kongo, sensormatic and check point.
In the 1980s and 1990s, RFID becomes commercial the united states included transportation and
personnel access, while European countries were interested in short range systems for tracking
animals, industrial and business applications.
In October 1987, in Alesund the first RFID based toll-collection system became operational. The
increase in commercial use of RFID prompted a need for standards, which led to many
standardization activities in the 1990’s, the international standards organization (ISO) developed
the (ISO-11785) and the (ISO-14443) standards for animal tracking.
In 1999, the European Article Numbering International (EAN) and the Uniform Code Council
(UCC) of the United States adopted a UHF frequency band for RFID and established the auto-ID
center at the Massachusetts Institute of technology.
3.4 Tags and Readers
An RFID system consists of tags and readers. RFID tags are small devices containing a chip and
an antenna that store the information for object identification. Tags can be applied to containers,
pallets, cases, or individual items. With no line-of-sight requirement, the tag transmits
information to the reader, and the reader converts the incoming radio waves into a form that can
be read by a computer system. An RFID tag can be active (with a battery) or passive (powered by
the signal strength emitted by the reader).
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 18
Figure 3: A RFID tag
3.4.1 Active Tags
Can be read from a long-range distance of more than 100 feet.
Are ideal for tracking high-value items over long ranges, such as tracking shipping
containers in transit.
Have high power and battery requirements, so they are heavier and can be costly.
3.4.2 Passive Tags
Can only be read from a short-range distance of approximately 5–10 feet.
Can be applied in high quantities to individual items and reused.
Are smaller, lighter, and less expensive (and therefore more prevalent) than active tags.
3.5 RFID and other Identification Technologies
3.5.1 RFID, Smart Cards and Other Form Factors
RFID technology is currently being used in conjunction with smart card technology in the
financial industry, primarily in Europe. Financial institutions are issuing smart cards to record
personal finance information such as account balances. RFID technology is also being used in
other form factors such as key fobs, bulk metal tags, garment disks, and even metal nails that can
be driven into pallets.
3.5.2 RFID and Barcodes
Although it is often thought that RFID and barcodes are competitive technologies, they are in fact
complementary. The primary element of differentiation between the two is that RFID does not
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 19
require line-of-sight technology. Barcodes must be scanned at specific orientations to establish
line-of-sight, such as an item in a grocery store, and RFID tags need only be within range of a
reader to be read or ‘scanned.’
Figure 4: Hype cycle of emerging technologies, 2009
Source: Gartner, 2009
Although RFID and barcode technologies offer similar solutions, there are significant advantages
to using RFID:
Tags can be read rapidly in bulk to provide a nearly simultaneous reading of contents, such as
items in a stockroom or in a container.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 20
Tags are more durable than barcodes and can withstand chemical and heat environments that
would destroy traditional barcode labels. Barcode technology does not work if the label is
damaged.
Tags have read and write capabilities and can be updated. Barcodes contain static information
that cannot be updated unless the user reprints the code.
Tags can potentially contain a greater amount of data compared to barcodes, which
commonly contain only static information such as the manufacturer and product
identification.
Tags do not require any human intervention for data transmission whereas barcodes do.
Figure 5: Innovation Diffusion Model
It is easy to see how RFID has become indispensable for a wide range of automated data
collection and identification applications. With the distinct advantages of RFID technology,
however, comes an inevitably higher cost. RFID and barcode technologies will continue to
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 21
coexist in response to diverse market needs. RFID, however, will continue to expand in markets
for which barcode or similar optical technologies are not as efficient.
3.6 RFID Global Standards
As RFID technology continues to expand, the need for establishing global standards is
increasingly apparent. Many retailers have completed RFID trials within their supplier
communities, adding pressure on manufacturers and suppliers to tag products before they are
introduced into the supply chain.
However, manufacturers cannot cost-effectively manage RFID tagging mandates from disparate
retailers until global standards are established. This process requires the creation and acceptance
of data standards that apply to all countries, and it requires scanners to operate at compatible
frequencies.
3.6.1 EPCglobal
EPCglobal is a member-driven organization of leading firms and industries focused on
developing global standards for the electronic product code (EPC) Network to support RFID.
The EPC is attached to the RFID tag, and identifies specific events related to the product as it
travels between locations. By providing global standards on how to attach information to
products, EPC enables organizations to share information more effectively.
The vision of EPCglobal is to facilitate a worldwide, multi-sector industry adoption of these
standards that will achieve increased efficiencies throughout the supply chain—enabling
companies to have real-time visibility of their products from anywhere in the world. The detailed
report is placed at Appendix II: EPC Radio-Frequency Identity Protocols Class-1 Generation-2
UHF RFID.
3.6.2 Global Data Synchronization
Global Data Synchronization (GDS) is an emerging market in Supply Chain Management. It is
the foundation for next-generation applications such as RFID-based tracking, collaborative
planning forecasting and replenishment (CPFR), and more.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 22
GDS is designed to keep supply chain operations synchronized by ensuring that basic product
data, such as the description and category stored by one company, matches the data stored by its
trading partners.
Organizations submit product data in a specific format to data pools around the globe, and the
data is then validated against a global data registry.
Standards for GDS are guided by the Global Commerce Initiative (GCI), a collective group of
retailers and manufacturers. The standards are being developed by the European Article
Numbering Association International and The Uniform Code Council (EAN UCC).
These standards assign attributes to product data that enables manufacturers, suppliers, retailers,
and other participants in the supply chain to share product-related data across the globe.
For example, manufacturers could have their product catalog accessible worldwide, and retailers
could search for any type of product and take advantage of unlimited global access.
3.6.3 International Organization for Standardization (ISO)
The International Organization for Standardization (ISO) is a network of national standards
institutes of 148 countries working in partnership with international organizations, governments,
industries, and business and consumer representatives.
The ISO asserts jurisdiction over the Air Interface (the frequency spectra used for RFID
transmission) through standards-in-development ISO 18000-1 through ISO 18000-7.
These are represented in the United States by American National Standards Institute (ANSI) and
the Federal Communications Commission (FCC).
3.6.4 AIM Global
AIM Global is the global trade association for the Automatic Identification and Mobility industry
that manages the collection and integration of data for information management systems.
Serving more than 900 members in 43 countries, AIM Global is dedicated to accelerating the use
of automatic identification data collection (AIDC) technologies around the world.
As the leader in developing international RFID standards, AIM Global strives to educate the
community. The company is participating as the RFID Association Sponsor for a series of
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 23
symposiums worldwide to build consensus about standards for using RFID technology on
commercial airplanes.
Aircraft manufacturers Boeing and Airbus plan to collaborate; both companies are moving
toward RFID adoption based on the Air Transport Association (ATA) automated identification
and data capture guidelines.
3.7 Uses of RFID
Although RFID is a proven technology that has existed since before World War II, it took several
years for a large scale implementation to occur in the United States. The implementation
eventually included freeway toll booths, parking areas, vehicle tracking, factory automation, and
animal tagging.
The most common application of RFID technology today is for tracking goods in the supply
chain, tracking assets, and tracking parts from a manufacturing production line.
Figure 6: RFID tag market forecast
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 24
Another common application is for security—RFID is used to control building access and
network security, and also for payment systems that let customers pay for items without using
cash.
As technological advancements in RFID lead to an even higher level of data transmission—in
addition to an inevitably lower cost—RFID technology will become ubiquitous within the supply
chain industry and other industries, increasing overall efficiencies and dramatically improving the
return on investment (ROI).
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 25
RFID UPDATE ON INDIAN RAILWAYS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 26
4 RFID UPDATE ON INDIAN RAILWAYS
The concept of automatic identification of wagons using Radio Frequency Identification (RFID)
was first conceived in the mid-1990s. The basic concept was to encode an RFID tag with the
wagon number and affix it to the side of each wagon.
Trackside readers were to be installed to read the tag from a distance and transmit the encoded
tag information over a network to a central computer. In this way, each moving wagon could be
identified and its movement tracked.
The technology was tried out as early as 1996, when Bharat Electronics Ltd. tested RFID tags for
automatic identification of wagons in the Bangalore area. At that time RFID technology was still
evolving and expensive, and it was difficult to provide network connectivity between the
trackside readers and the computer system. Therefore this attempt was not extended further.
Figure 7: Technology Acceptance Model
In recent years, RFID technology has become widely prevalent and network connectivity has
become inexpensive and widely prevalent. Therefore, the use of RFID technology for wagon
identification and tracking has become feasible.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 27
4.1 Genesis of the Pilot Project
For maintaining records of assets in Railway Board, accurate census of wagons is essential. With
a view to preventing inaccuracies in the master records of wagons, a paper was circulated by C &
IS Directorate in 2003 with the outline of a proposed system for wagon identification and
tracking using RFID technology.
When FOIS Phase 1 was implemented in 2002, it was observed that incorrect recording of wagon
numbers through manual means was a major problem in maintaining correct data in the system.
CRIS therefore proposed a work for identification of wagons using RFID tags in 2005.
Based on the above two requirements, Board directed CRIS to implement a pilot project in 2006.
4.2 RFID Pilot project
A pilot project has been implemented by CRIS in ECoR in the VSKP-Talcher-Paradeep section
on 500 CC BOBR/BOBRN wagons. The equipment was installed and the wagons tagged
between June 2008 and September 2008. Technology from Transcore has been used for the tags,
antennas, and readers.
Figure 8: Schematic diagram of the implementation of Pilot Project
Read-only tags are used. The Wagon Number, Wagon Type, and Owning Railway are encoded
on the tag. These can be decoded by the reader itself. The wagon identifier given above, along
with the reader ID and reader timestamp, is sent to the central server through a wide area network
being used by the FOIS system.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 28
Railway Board had approved the enclosure of the Pilot Project for using RFID technology or
automatic identification of Railways Wagons at an approximate cost of Rs. 2 crores in the
existing work of FOIS.
It was decided to implement the pilot in East Coast Railway, in the Vishakhapatnam- Talcher-
Paradeep section, on 500 BOBRN / BOBR wagons running in closed circuit. For the pilot, 500
wagons were tagged, and trackside readers were placed at 5 locations, along with hand held
readers at major yards and loading / unloading points as part of the pilot. Pilot Project Status
Sheet of RFID is placed as Annexure –I.
The work was awarded to M/s Wipro Ltd (Infotech Division). They have, in turn, obtained the
readers and tags from M/s Transcore, USA. Transcore have authorized M/s Rajkamal Barscan
Ltd to provide installation and maintenance services for their equipment for the pilot project.
Other equipment such as converter (Adam) boxes, Wi-fi equipment, Catamaran middleware and
middleware server, is directly maintained by Wipro.
Figure 9: Pilot project using RFID at ECoR showing tag reader and tag on a wagon
On successful completion of the pilot project, it was planned to expand the system to tag all the
wagons on Indian Railways, and place readers in all the major stations yards, and maintenance
facilities.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 29
Tags
Tags provided are of Transcore make, model XT5120. They are passive UHF tags, that is, they
do not have a battery, and are “beam powered”, or dependent on the tag reader for their power.
Their operating frequency is 865-867 MHz.
Figure 10: Tag
Mounting of tag
The tags are mounted on both sides of the wagons. Mounting plates are welded to the side of the
wagon and the tags are riveted to the plates using two pop rivets. On two rakes, steel rivets have
been used. On other rakes, aluminum rivets have been used. Seen from each end of the wagon,
the tags are located at the nearer left corner as shown below. They are identified as ‘X’ side tags
if they are closer to the ‘X’ (brake rigging) end of the wagon, and ‘Y’ side tags if they are closer
to the ‘Y’ (hopper apparatus) end of the wagon.
Figure 11: Mounting of Tag on a Wagon
Encoding of data on tag
The following data is encoded on the tag:
1) Wagon number
2) Wagon type (coded)
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 30
3) Owning Railway
4) Side code
5) “Code 37” encoding is used to fit the data into the 96 bits available on the tag.
Readers
Transcore AI 1200 readers are used along with AR 2200 RF modules. These are provided with
SP 470 antennas, two per reader, on either side of the track. The tag is read by the antenna which
in turn sends the signal via the RF module to the reader. The equipment in the reader box is
powered by an ordinary single phase 220 V power source. Low power is required (about 50 – 100
W). The readers are provided with a UPS, and the whole assembly is placed in a weather-proof
enclosure.
Two Transcore Encompass 1 handheld readers are also provided in order to read the tags in the
yard area. These readers are used to register the wagons in a rake at the time of initial rake set up.
Figure 12: Hand Held Readers
Converter box
The reader connects to the network through an ADAM 6500 series converter. The Adam 6500 is
an Ethernet enabled industrial controller running Windows CE.Net. The Adam controller runs the
Catamaran client.
Figure 13: Adam Box
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 31
Last mile network and WAN connectivity
The data flows from the Adam converter to the Motorola Canopy 5700 wireless antenna and is
transmitted wirelessly using Wi-fi (IEEE 802.11b) network standard, to the nearest FOIS point-
of-presence (POP). At the POP, a network switch is provided to connect to the FOIS router and
move the data over the FOIS WAN to the central computer placed in CRIS, Chanakyapuri.
Figure 14: Wireless Antenna
Application server
The data goes to the application server (HP Xeon using Windows 2003 server and SQL Server
2003) that runs the Catamaran middleware software from Shipcomm. This converts the data into
a format readable by FOIS.
Figure 15: Catamaran middleware architecture
FOIS connectivity
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 32
The Catamaran server connects to the FOIS system through a software interface that enables the
data to move into the FOIS database.
Figure 16: FOIS and RFID middleware interconnectivity
Tag encoder
Tags are encoded by placing them in the Transcore AP 4118 Tag Programmer and running the
encoding program.
Provision of data connectivity
Connectivity between the readers placed at the three sites, that is, Talcher, Paradeep, and
Vishakhapatnam, was to be provided through point-to-point wireless links. However, the
equipment proved to be difficult to place and install in the field. Therefore, in order to reduce the
delays in the project, cable pairs were provided at all locations from the reader to the nearest
FOIS POP (point-of-presence). The cable pairs were initially used to move data from the readers
to the FOIS network, on which the central server was connected. In December 2008, local
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 33
connectivity was switched over to the wireless link at Vishakhapatnam. In September 2009, local
connectivity at Talcher and Paradeep was also shifted to the wireless link exclusively.
4.3 Challenges faced and progress made
The pilot implementation has indicated that the tag and reader are quite rugged and have not been
damaged even after two years of running in harsh environments. While reading of the wagon
identity through the tag and reader sub-system appears to be reliable, problems of connectivity
and power supply have caused interruptions in service.
4.4 Current Status
The Pilot Project for Automatic Identification of Wagons using RFID has been running since
September 2008. Five hundred BOBRN / BOBR wagons have been provided with RFID tags and
are running in the Vishakhapatnam – Talcher – Paradeep coal circuit of ECoR.
Readers have been provided at Vishakhapatnam (Ore Exchange Yard), Talcher (NTPC hut) and
Paradeep (weighbridge).
Figure 17: Schematic diagram of RFID implementation by CRIS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 34
4.5 Potential Challenges in RFID Implementation
The potential challenges to consider when implementing an RFID solution are:
1. Large volumes of data
Readers scan each RFID tag several times per second, which generates a high volume of raw
data. Although the data is redundant and discarded at the reader level, processing large
volumes of data can be difficult.
2. Product information maintenance
When a high volume of RFID tags are processed by the reader, the attributes of each tagged
product must be continually retrieved from a central product catalog database—a process that
results in challenges for large-scale implementations.
3. Configuration and management of readers and devices
When a large number of readers and related hardware devices are deployed across multiple
facilities, configuration and management can be challenging. The implementation of
automated devices for these processes is essential.
4. Data integration across multiple facilities
In an enterprise with multiple facilities that are geographically distributed, it is increasingly
difficult to manage data in real time while at the same time aggregating it into the central IT
facility—a process that can place a significant burden on the network infrastructure.
5. Data ownership and partner data integration
When there are different companies involved in business processes, such as commonly found
in the Retail supply chain, it can create issues pertaining to the ownership and integration of
the data, thereby compromising the integrity of the solution architecture.
6. Data security and privacy
Depending on the nature of the business application and the solution scenario, security and
privacy challenges could have a significant impact on the architecture.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 35
OBSERVATION AND ANALYSIS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 36
5 OBSERVATION AND ANALYSIS
The observations and learning from the pilot project are:
1) The basic technology adopted (that is, tags and readers to modified AAR specifications)
has been found to be workable in IR conditions
2) Supporting equipment placed at the reader site for the pilot project, that is, data converter
box, UPS, switch, etc. should be made more robust and monitor able from a central site
3) Latency in the data network should be maintained within limits; it is preferable that local
network at site should not be provided through Wi-Fi links
4) Procedures for mounting of the tags on the wagons should be drawn up in detail and a
cross-functional team should be set up to execute the project
After fresh exercises on the system, the following data was received from the reader at the
location.
(i) AVI through RFID for the month of October 2010
(ii) AVI through RFID for the month of November 2010
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 37
(iii) AVI through RFID for the month of December 2010
(iv) Automatic Vehicle Identification through RFID for the month of January 2011
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 38
(v) Application to monitor the tagged wagon movement
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 39
CONCLUSION
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 40
6 CONCLUSION
After consulting the technical documents and scrutinizing the available data, it was found that the
basic equipment – tags, readers, antennas, encoders – were robust and provided reliable service.
The key findings emerged from the study of providing the automatic identification system for
wagons using RFID are:
1. It will enable automatic collection of rake composition data into FOIS at the time of rake
formation.
2. It will enable in-motion weighbridges as well as automatic devices for trackside diagnostics
to accurately identify the wagons.
3. It will give an accurate count of wagons present in a particular yard, division, and zone.
4. Annual wagon census will be eliminated.
On the basis of study, Railway Board has sanctioned a work for “Automatic Identification of
Wagons using RFID” at an estimated cost of Rs. 57 crore in 2010-11, for provision of RFID tags
in the coal and ore carrying rakes of three zonal Railways in the Eastern part of the country.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 41
RECOMMENDATIONS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 42
7 RECOMMENDATIONS
There are still some technical concerns that needed to be addressed before full blown
implementation. These are given in the table below:
S.No. Concerns Requirement Observation Recommendations
1. Verification of
accuracy of tag
99.9% read
accuracy should be
maintained.
No misreads or
defective tags
found
It is proposed to read the
tags using the hand-held
readers. The data read by
the handheld reader should
be verified against the data
read by the trackside
readers
2.
Occasional
reading of a tag
by both
antennas of the
reader
Each antenna
should read only
the tags passing on
the track nearest to
it
Antennas are now
tuned, resulting in
reduction of this
phenomenon
No further action is
required as issue is now
resolved
3.
Delay in receipt
of data at the
central server
Data from the
reader should
reach the central
server
instantaneously
after being read at
the reader
Delays in data
reaching the central
server have been
attributed to high
network latency
and network
downtime
Delayed data movement
occurs frequently from
Talcher and Paradeep. The
causes for these frequent
drops need to be studied
further
4.
Clock
synchronization
between central
server and
readers
Clock
synchronization
should be
maintained
between server and
the reader clocks
Clocks are
synchronized
manually at
present.
Synchronization of two
systems clock should be
managed by application
software
The pilot system should also be utilized to carry out certain additional technology trials in order
to determine the most robust design of the RFID system before the roll-out starts. These are
proposed to be as given below:
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 43
S.No. Concern Observation Recommendation
1.
Installation of IP
addressable
equipment at
reader sites
Equipment such as UPSs,
switches, etc. installed in the
reader sites are not remotely
addressable
UPSs and switches should be
replaced with IP addressable
equipment so that all of them
can be monitored remotely
2.
Installation of
train presence
indicators
Direction of movement of the
train is not recoded
Proposals from those
vendors should be invited,
who have facility to provide
axle counters / laser beam
devices to detect train
presence and direction
3.
Integration of
RFID system
with
weighbridge and
other trackside
diagnostic
systems
Positive identification of the
wagons being weighed by the
in-motion weighbridges or
going past other trackside
diagnostic equipment is
required.
Proposals for providing a
complete system of trackside
diagnostics and wagon
identification with
correlation between the
wagon identification data
and the diagnostic data
captured should be obtained
7.1 Further Recommendations
In parallel with the activities to be done in the pilot implementation, certain preparatory activities
for the roll-out project can be taken up immediately, so that detailed estimate can be prepared and
further action started.
1. Appropriate location of tag on the wagons and a better method of affixing the tag on the side
of the wagon needed to be ascertained
2. Data to be encoded in the tag should be decided upon and broad encoding scheme should be
worked out
3. Reader locations should be determined. Also care has to be taken to ensure that reader
locations cannot be bypassed because of change in traffic pattern
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 44
4. Power from solar panels should be explored to eliminate breakdowns owing to poor power
supply / power cuts
5. IP addressable UPS should be provided in each field location for centralized monitoring
6. Due to fast changes in technology, constant reviewing process is required. Further validations
are required for comparison between the AAR technology (as used in the pilot) and other
technology such as EPC Gen2. This task should be carried out by a technical team comprising
experts from RDSO, CRIS and Railways Board representatives.
7.2 Limitations
This report is based on the work done in the areas of deployment and monitoring of wayside
inspection devices on the Indian Railways by the members of the committee.
Presently there is no integration of WID and AVI systems on Indian Railways. As such the
concept of the integrated working has been developed solely by reading literature available on the
internet and from other sources.
The concept of integration presented in this report is theoretical. It is not based on any tests in
laboratories or trials on the field and as such requires extensive testing for verification and
validation of each component prior to implementation.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 45
ACTION PLAN FOR IMPLEMENTATION
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 46
8 ACTION PLAN FOR IMPLEMENTATION
A proposal for phase wise implementation should be tried and validated before a full scale
rollout. Since the project needs diverse skills and experience, a task force should be nominated
for implementing the pilot project.
A scheme of this magnitude should be tested and validated for the efficiency and economic
benefits before a railway wide rollout. A possible site is the TATA-NOMD section on
Chakradharpur (CKP) Division of South Eastern Railway.
This site has the following salient features:
The site has one of highest traffic densities on the Indian Railways which can make validation
of data models faster
Closed loop vehicles are available on the section feeding iron ore to Tata Steel plant
The section is geographically small and the total route km is about 127 km
Figure 11: Map of proposed area for pilot project
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 47
An action plan for the pilot project is summarized in the following table:
Activity
Id Description Estimated
Duration Predecessor
1. Setting up of task force for implementation of the integrated system
1 month None
2. Expression of Interest for system to be developed, based on AAR standards
3 months 1
3. Setup of infrastructure and trial at CKP division
6 months 2
4.
Development of first working document for standard data format for communication between the Identification device and the system
3 months 2,3
5. Setting up of additional servers 3 months
6. Setting of data centre and 24x7 online contact centre
3 months
7. Creation of Identification mechanism of subcomponents, such as, Loco, wagon, brake van, container
8. Implementation at CKP division in first phase
9. Monitoring of data and validations
Given the scale of technology inputs and the likely changes in the maintenance procedures, it is
suggested to test out the technology on a small and closed but highly functional setup. The
TATA-NOMD section and the associated rolling stock on merry go round system on the
Chakradharpur division of SER are suggested for a pilot rollout. An action plan for the pilot roll
out is proposed listing the following elements.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 48
FUTURE EXPANSIONS
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 49
9 FUTURE EXPANSIONS
Through RFID technology we can automatically identify, locate, track, monitor and protect a
variety of things. Resources that can be RFID tagged include:
1. Personnel
2. Assets
3. Vehicles
4. Inventory and also the conditions and the environment around them
RFID can operate around the enterprise in a local area, indoors or out. Through RFID assets can
be automatically protected giving the owner the freedom to come and go from a secured location
with the assets as they please.
Wagons/Coaches/Trailers/Containers and personnel can be automatically identified and
coordinated resulting in dramatic efficiencies in personnel and asset utilization, all of which can
enable increased revenue. This “Hands free” mode provides automatic visibility, improved
productivity and dramatically reduces human intervention.
Active tags can provide the additional security. Tag can be configured to alarm and send an alert
signal, if they are removed. Therefore, active tags provide a very good security solution for
assets, containers, loaded wagon, parcel vans etc.
Tags equipped with the motion sensor onboard can alarm in the event of unauthorized
application, inventory movement etc.
Beaconing tags can provide an automated inventory count. A signal i.e. sent to a receiver at
predetermined time intervals to provide continuous monitoring of the inventory and its location.
Active tags can be integrated with different sensor types to monitor the change of conditions of
such things as temperature, humidity and pressure, as well as hazardous chemicals or radiation.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 50
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 51
REFERENCES
Books:
1. Sandip Lahiri, RFID Sourcebook, Prentice Hall, 2005, Pages: 304
2. Himanshu Bhatt, Bill Glover, RFID Essentials, O'Reilly, 2006, Pages: 276
Articles:
1. Integration of Way Side Inspection Devices & Automatic Vehicle Identification Systems
on Indian Railways, Ministry of Railways, 2011, Pages: 108
2. Building India: Transforming the nation’s logistics infrastructure, Infrastructure Practice,
Mckinsey & Company, 2010, Pages: 72
3. Indian Railways Vision 2020, Government of India, Ministry of Railways, December,
2009, Pages: 62
4. Shirish C. Srivastava, Sharat S. Mathur, Thompson S. H. Teoz, Tracking Freight Railcars
in Indian Railways: Technology Options and Stakeholder Interests, International
Conference on Information Systems (ICIS), 2008, Pages: 12
5. RFID Technologies: Emerging Issues, Challenges and Policy Options, Joint Research
Centre, Institute for Prospective Technological Studies, European Union, 2007, Pages:
278
Websites:
1. http://www.indianrailways.gov.in/indianrailways/indexhome.jsp
2. http://cris.org.in/wps/portal/CRISPortal
3. http://www.it.indianrail.gov.in/RFID.HTM
4. http://www.enigmaticconsulting.com/
5. http://www.rfidjournal.com
6. http://www.ncsl.org/
7. http://www.rfid-library.com
8. http://autoid.mit.edu/
9. http://www.epcglobalus.org
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 52
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 53
APPENDIX – I
Indian Railways is a multi-gauge, multi-traction system covering the following:
Other Interesting facts about Indian Railways:
(Source: http://www.indianrailways.gov.in/indianrailways/evolution/evolution.jsp)
Track
Kilometers
Broad Gauge Meter Gauge Narrow Gauge Total
86,526 18,529 3,651 108,706
Route
Kilometers
Electrified
16,001
Total
63,028
Passenger trains in a day 7,000 (approx.)
Freight trains in a day 4,000 (approx.)
Locomotives 7566
Coaching vehicles 37,840
Freight wagons 222,147
Stations 6853
Yards 300
Good sheds 2300
Repair shops 700
Work force 1.54 million
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 54
APPENDIX – II
AAR MANUAL OF STANDARDS AND RECOMMENDED PRACTICES
AUTOMATIC EQUIPMENT IDENTIFICATION
Standard: S-918
AAR (American Association of Railroads) specifies standards for automatic electronic
identification of equipments that are used in rail transportation. These equipments include:
1) Railcars
2) Locomotives
3) Intermodal vehicles
4) End of train devices
The system and data outputs described in this standard are compatible with ANSI Standard
MH5.1.9-1990 and ISO Standard 10374, for the automatic identification of containers.
Identification system requirements
Tags mounted on transportation equipment shall be read by an interrogator (reader) that
operate on ultra high frequency radio waves
The reader shall decode the altered radio waves reflected by the tags on the equipment
The altered radio waves (modulation) shall indicate the alphanumeric identification code
of the equipment as well other predefined information
The interrogator may optionally add its own identification number, date and time
System shall accurately read trains moving up to 80 mph with any equipment in areas of
one or more parallel tracks, with or without trains standing or operating on any or all of
these tracks, in the same or opposite direction
The tag unit shall be tamper-proof and their life shall not be less than 15 years without
any maintenance
The tags shall survive and maintain the integrity of stored data in a maximum peak field
strength of 1500 V/m for 60 pulses in the 1.2 to 1.4 GHz range, and 100 V/m for 60
seconds for any continuous wave radio frequency source
The tags shall be capable of full operation in the electromagnetic environment normally
found at railroad facilities
Tags shall be capable of being programmed in the railroad environment
Interrogator (Reader) Requirements
Interrogator units shall be capable of interrogating multiple tags within their reading field,
discriminating between the tags without misreading
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 55
Error detection shall be used to ensure reading accuracy
Modulated Backscatter Communication
The tag shall not be a transmitter and shall not contain components to generate radio
frequency (RF) signals
The tags must act merely as field disturbance devices, slightly modifying and reflecting
the signal transmitted by the reader system
This slight modification of the signal includes the unique identification code of the tag.
This method of communication is called “modulated backscatter.”
System Operations
Block Diagram of RF module, reader, antenna and tag
RF Module
The RF module is responsible for transmitting and receiving radio energy
The RF module shall transmit a single frequency of RF energy and receive that same
frequency after it is reflected from the tag
The tag information shall be encoded into 20- and 40-kHz signals
Reader
The RF module receives the modulated signal from the tag and passes the 20- and 40-kHz
modulating frequencies to the reader
The reader shall decode the frequencies into binary information equivalent to the 128 bits
of data stored in the tag
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 56
Antenna
The reader system shall be capable of using a single antenna to transmit and receive RF
energy
Tag
The clock circuit sequences all circuit functions such that information stored in the
memory circuit is conveyed to the reader system within precise timing
The information stored in the memory circuit is permanent and is a unique code that is
specified by the owner prior to installation of the tag onto its respective object
Tag Classes
Nonbattery tags must be sufficiently close to the reader system's antenna in order to
collect enough energy to activate the tag's electronics
Battery-powered tags do not require as close proximity to the reader system's antenna
Advantages of the battery tag shall include greater range and reduced RF power required
from the reader system
Advantage of the nonbattery tag is a longer life
Regardless of whether the tag has a battery or not, a tag does not transmit RF energy; it
only reflects energy transmitted by the reader system
Tag Frequency of Operation and Sensitivity
The nonbattery tag shall not operate in root mean square (RMS) electric field strengths
below 2.0 V/m, and shall operate properly in RMS electric field strengths above 3.5 V/m
The field strength required for nonbattery tag operation shall not increase by more than 3
dB when it is rotated by ±25° in any plane
Battery-powered dynamic tags shall have a minimum sensitivity such that an
interrogating signal of 750 mV/m will allow proper tag operation
Other battery and end-of-train device tags shall have a minimum sensitivity such that an
interrogating signal of 150 mV/m will allow proper tag operation
Battery-powered dynamic tags shall be operational within 7 ms of excitation by an
interrogating signal from sensing equipment
All other tags shall be operational within 4 ms of excitation by an interrogating signal
from the sensing equipment
Location and Mounting of Tags on Equipment
No area on the tag’s rear surface may be more than 1/4 in. from the metal mounting
surface
A 1/8 in. or thicker smooth metal back plate at least as large as the tag should be used
In all cases, back plates are preferred and they should extend 1 in. beyond the full
perimeter of the tag
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 57
Each railcar and locomotive shall carry two tags. On railcars, one tag shall be located in a
window on the BL (B End–Left) portion and the other shall be located in a window on the
AR (A End–Right)
On locomotives, one shall be located in a window on the Front-Right (F End–Right)
portion and the other in a window on the Rear-Left (R End–Left) portion
Tags must be placed in a vertical plane at least 4 ft from the centerline of the track
The tags must be in a rectangular area bounded by horizontal lines 2 to 5 ft above top of
rail, measured for an empty car
Tags shall be mounted on a plane perpendicular to the ground and shall be oriented with
horizontal polarization
The long axis of the tag must be within 10° of parallel to the rail. The face of the
tag must not be rotated outward toward the ground more than 10° from the car mounting
surface
Inward rotation of the tag is prohibited.
As a minimum, all tags must be manufactured in a facility certified as meeting or exceeding AAR
Quality Assurance Specification M-1003.
REPORT FORMAT
Standard: S-918B
Adopted: 2009
Salient features:
Provides the reasonably compact and accurate method to report inspection data to the data
collection system in a consistent file format
Is extension of S-198A data format
Does not specify any standard communication handshaking or protocol between the
inspecting system and any data collection system
Configuration options
Output formats
1. Fixed lengths, no delimiters (Standard)
2. Fixed field lengths, delimiter (User Selectable)
3. Variable field lengths, delimiters (User Selectable)
Control file
Used for specifying the standard units of measure, looping structure, separators
and delimiters. This is an optional feature.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 58
APPENDIX – III
EPC Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID
Protocol for Communications at 860 MHz - 960 MHz, Version 1.2.0
Specification for RFID Air Interface
This specification defines the physical and logical requirements for a passive-backscatter,
Interrogator-talks-first (ITF), radio-frequency identification (RFID) system operating in the 860
MHz - 960 MHz frequency range.
The system comprises Interrogators (also known as Readers) and Tags (also known as Labels).
An Interrogator transmits information to a Tag by modulating an RF signal in the 860 MHz - 960
MHz frequency range.
The Tag receives both information and operating energy from this RF signal. Tags are passive,
meaning that they receive all of their operating energy from the Interrogator's RF waveform.
An Interrogator receives information from a Tag by transmitting a continuous-wave (CW) RF
signal to the Tag; the Tag responds by modulating the reflection coefficient of its antenna,
thereby backscattering an information signal to the Interrogator.
The system is ITF, meaning that a Tag modulates its antenna reflection coefficient with an
information signal only after being directed to do so by an Interrogator.
Interrogators and Tags are not required to talk simultaneously; rather, communications are half-
duplex, meaning that Interrogators talk and Tags listen, or vice versa.
Tags
A Tag shall:
Operate over the frequency range from 860 – 960 MHz
Modulate a backscatter signal only after receiving the requisite command from an
Interrogator
Modulate a backscatter signal unless commanded to do so by an Interrogator using the
signaling layer
Command structure and extensibility
This specification allows four command types:
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 59
(1) Mandatory
(2) Optional
(3) Proprietary
(4) Custom
Terms and definitions
The principal terms and definitions used in this specification are described in ISO/IEC 19762.
Additional terms and definitions
Extended temperature range –40 °C to +65 °C (see nominal temperature range).
Full-duplex communications A communications channel that carries data in both directions at once.
Half-duplex communications A communications channel that carries data in one direction at a time rather than in both
directions at once.
Inventoried flag A flag that indicates whether a Tag may respond to an Interrogator. Tags maintain a
separate inventoried flag for each of four sessions; each flag has symmetric A and B
values. Within any given session, Interrogators typically inventory Tags from A to B
followed by a re-inventory of Tags from B back to A (or vice versa).
Inventory round The period initiated by a Query command and terminated by either a subsequent Query
command (which also starts a new inventory round) or a Select command.
Multiple-Interrogator environment An operating environment (defined below) within which a modest number of the available
channels are occupied by active Interrogators (for example, 5 active Interrogators
operating in 25 available channels).
Nominal temperature range –25 °C to +40 °C (see extended temperature range).
Operating environment A region within which an Interrogator’s RF transmissions are attenuated by less than
90dB. In free space, the operating environment is a sphere whose radius is approximately
1000m, with the Interrogator located at the center. In a building or other enclosure, the size
and shape of the operating environment depends on factors such as the material properties
and shape of the building, and may be less than 1000m in certain directions and greater
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 60
than 1000m in other directions.
Operating procedure Collectively, the set of functions and commands used by an Interrogator to identify and
modify Tags. (Also known as the Tag-identification layer.)
PacketCRC A 16-bit cyclic-redundancy check (CRC) code that a Tag may dynamically calculate over
its PC, optional XPC, and EPC and backscatter during inventory.
PacketPC Protocol-control information that a Tag with nonzero-valued XI dynamically calculates
and backscatters during inventory.
Passive Tag (or passive Label) A Tag (or Label) whose transceiver is powered by the RF field.
Permalock or Permalocked A memory location whose lock status is unchangeable (i.e. the memory location is
permanently locked or permanently unlocked) except by recommissioning the Tag is said
to be permalocked.
Persistent memory or persistent flag A memory or flag value whose state is maintained during a brief loss of Tag power.
Physical layer The data coding and modulation waveforms used in Interrogator-to-Tag and Tag-to-
Interrogator signaling.
Protocol Collectively, a physical layer and a Tag-identification layer specification.
Q A parameter that an Interrogator uses to regulate the probability of Tag response. An
Interrogator commands Tags in an inventory round to load a Q -bit random (or pseudo-
random) number into their slot counter; the Interrogator may also command Tags to
decrement their slot counter. Tags reply when the value in their slot counter (i.e. their slot
– see below) is zero. Q is an integer in the range (0,15); the corresponding Tag response
probabilities range from 20 = 1 to 2
-15 = 0.000031.
Random-slotted collision arbitration A collision-arbitration algorithm where Tags load a random (or pseudo-random) number
into a slot counter, decrement this slot counter based on Interrogator commands, and reply
to the Interrogator when their slot counter reaches zero.
Recommissioning
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 61
A significant altering of a Tag’s functionality and/or memory contents, as commanded by
an Interrogator, typically in response to a change in the Tag’s usage model or purpose.
Session An inventory process comprising an Interrogator and an associated Tag population. An
Interrogator chooses one of four sessions and inventories Tags within that session. The
Interrogator and associated Tag population operate in one and only one session for the
duration of an inventory round. For each session, Tags maintain a corresponding
inventoried flag. Sessions allow Tags to keep track of their inventoried status separately
for each of four possible time-interleaved inventory processes, using an independent
inventoried flag for each process.
Single-Interrogator environment An operating environment within which there is a single active Interrogator at any given
time.
Singulation Identifying an individual Tag in a multiple-Tag environment.
Slot Slot corresponds to the point in an inventory round at which a Tag may respond. Slot is the
value output by a Tag’s slot counter; Tags reply when their slot (i.e. the value in their slot
counter) is zero.
StoredCRC A 16-bit cyclic-redundancy check (CRC) code that a Tag calculates over its StoredPC and
EPC and stores in EPC memory at power-up, and may backscatter during inventory.
StoredPC Protocol-control information stored in EPC memory that a Tag with zero-valued XI
backscatters during inventory.
Tag-identification layer Collectively, the set of functions and commands used by an Interrogator to identify and
modify Tags (also known as the operating procedure ).
Tari Reference time interval for a data-0 in Interrogator-to-Tag signaling. The mnemonic
“Tari” derives from the ISO/IEC 18000-6 (part A) specification, in which Tari is an
abbreviation for Type A Reference Interval.
Protocol requirements
An Interrogator sends information to one or more Tags by modulating an RF carrier using double-
sideband amplitude shift keying (DSB-ASK), single-sideband amplitude shift keying (SSB-ASK),
or phase-reversal amplitude shift keying (PR-ASK) using a pulse-interval encoding (PIE) format.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 62
Tags receive their operating energy from this same modulated RF carrier.
An Interrogator receives information from a Tag by transmitting an unmodulated RF carrier and
listening for a backscattered reply. Tags communicate information by backscatter modulating the
amplitude and/or phase of the RF carrier. The encoding format, selected in response to
Interrogator commands, is either FM0 or Miller- modulated subcarrier. The communications link
between Interrogators and Tags is half-duplex, meaning that Tags shall not be required to
demodulate Interrogator commands while backscattering. A Tag shall not respond to a mandatory
or optional command using full-duplex communications.
An Interrogator manages Tag populations using three basic operations:
a) Select
The operation of choosing a Tag population for inventory and access. A Select command may
be applied successively to select a particular Tag population based on user-specified criteria.
This operation is analogous to selecting records from a database.
b) Inventory
The operation of identifying Tags. An Interrogator begins an inventory round by transmitting a
Query command in one of four sessions. One or more Tags may reply. The Interrogator
detects a single Tag reply and requests the PC/XPC word(s), EPC, and CRC from the Tag.
Inventory comprises multiple commands. An inventory round operates in one and only one
session at a time.
c) Access
The operation of communicating with (reading from and/or writing to) a Tag. An individual
Tag must be uniquely identified prior to access. Access comprises multiple commands, some
of which employ one-time-pad based cover-coding of the R=>T link.
Description of operating procedure
The operating procedure defines the physical and logical requirements for an Interrogator-talks-
first (ITF), random-slotted collision arbitration, RFID system operating in the 860 MHz – 960
MHz frequency range.
Signaling
The signaling interface between an Interrogator and a Tag may be viewed as the physical layer in
a layered network communication system. The signaling interface defines frequencies,
modulation, data coding, RF envelope, data rates, and other parameters required for RF
communications.
Operational frequencies
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 63
Tags shall receive power from and communicate with Interrogators within the frequency range
from 860 MHz to 960 MHz, inclusive. An Interrogator’s choice of operational frequency will be
determined by local radio regulations and by the local radio-frequency environment. Interrogators
certified for operation in dense-Interrogator environments shall support, but are not required to
always use.
.
Interrogator-to-Tag (R=>T) communications
An Interrogator communicates with one or more Tags by modulating an RF carrier using DSB-
ASK, SSB-ASK, or PR-ASK with PIE encoding. Interrogators shall use a fixed modulation
format and data rate for the duration of an inventory round. The Interrogator sets the data rate by
means of the preamble that initiates the round.
Interrogator frequency accuracy
Interrogators certified for operation in single- or multiple-Interrogator environments shall have a
frequency accuracy that meets local regulations. Interrogators certified for operation in dense-
Interrogator environments shall have a frequency accuracy of +/– 10 ppm over the nominal
temperature range (–25°C to +40°C) and +/– 20 ppm over the extended temperature range (–40°C
to +65°C). Interrogators rated by the manufacturer to have a temperature range wider than
nominal but different from extended shall have a frequency accuracy of +/– 10 ppm over the
nominal temperature range and +/– 20 ppm to the extent of their rated range. If local regulations
specify tighter frequency accuracy then the Interrogator shall meet the local regulations.
Modulation
Interrogators shall communicate using DSB-ASK, SSB-ASK, or PR-ASK modulation. Tags shall
demodulate all three modulation types.
Tag states and slot counter
Ready state
Tags shall implement a ready state. Ready can be viewed as a “holding state” for energized Tags
that are neither killed nor currently participating in an inventory round. Upon entering an
energizing RF field a Tag that is not killed shall enter ready. The Tag shall remain in ready until
it receives a Query command whose inventoried parameter (for the session specified in the Query)
and sel parameter match its current flag values. Matching Tags shall draw a Q -bit number from
their RNG, load this number into their slot counter, and transition to the arbitrate state if the
number is nonzero, or to the reply state if the number is zero. If a Tag in any state except killed
loses power it shall return to ready upon regaining power.
Arbitrate state
Tags shall implement an arbitrate state. Arbitrate can be viewed as a “holding state” for Tags
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 64
that are participating in the current inventory round but whose slot counters hold nonzero values.
A Tag in arbitrate shall decrement its slot counter every time it receives a QueryRep command
whose session parameter matches the session for the inventory round currently in progress, and it
shall transition to the reply state and backscatter an RN16 when its slot counter reaches 0000h.
Tags that return to arbitrate (for example, from the reply state) with a slot value of 0000 shall
decrement their slot counter from 0000 h to 7FFF h at the next QueryRep (with matching session)
and, because their slot value is now nonzero, shall remain in arbitrate.
Reply state
Tags shall implement a reply state. Upon entering reply a Tag shall backscatter an RN16. If the
Tag receives a valid acknowledgement (ACK) it shall transition to the acknowledged state,
backscattering the reply. If the Tag fails to receive an ACK within time T2 (max), or receives an
invalid ACK or an ACK with an erroneous RN16, it shall return to arbitrate. Tag and Interrogator
shall meet all timing requirements.
Acknowledged state
Tags shall implement an acknowledged state. A Tag in acknowledged may transition to any state
except killed, depending on the received command. If a Tag in the acknowledged state receives a
valid ACK containing the correct RN16 it shall re-backscatter the reply. If a Tag in the
acknowledged state fails to receive a valid command within time T2 (max) it shall return to
arbitrate. Tag and Interrogator shall meet all timing requirements.
Open state
Tags shall implement an open state. A Tag in the acknowledged state whose access password is
nonzero shall transition to open upon receiving a Req_RN command, backscattering a new RN16
(denoted handle) that the Interrogator shall use in subsequent commands and the Tag shall use in
subsequent replies. Tags in the open state can execute all access commands except Lock and
BlockPermalock. A Tag in open may transition to any state except acknowledged, depending on
the received command. If a Tag in the open state receives a valid ACK containing the correct
handle it shall re-backscatter the reply. Tag and Interrogator shall meet all timing requirements
except T2 (max); in the open state the maximum delay between Tag response and Interrogator
transmission is unrestricted.
Secured state
Tags shall implement a secured state. A Tag in the acknowledged state whose access password is
zero shall transition to secured upon receiving a Req_RN command, backscattering a new RN16
(denoted handle) that the Interrogator shall use in subsequent commands and the Tag shall use in
subsequent replies. A Tag in the open state whose access password is nonzero shall transition to
secure upon receiving a valid Access command sequence, maintaining the same handle that it
previously backscattered when it transitioned from the acknowledged state to the open state. Tags
in the secured state can execute all access commands. A Tag in secured may transition to any
state except open or acknowledged, depending on the received command. If a Tag in the secured
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 65
state receives a validACK containing the correct handle it shall re-backscatter the reply. Tag and
Interrogator shall meet all timing requirements except T2 (max); in the secured state the maximum
delay between Tag response and Interrogator transmission is unrestricted.
Killed state
Tags shall implement a killed state. A Tag in either the open or secured states shall enter the
killed state upon receiving a valid Kill command sequence with a valid nonzero kill password,
zero-valued Recom bits, and valid handle. If a Tag does not implement recommissioning then it
treats nonzero Recom bits as though Recom = 0. Kill permanently disables a Tag. Upon entering
the killed state a Tag shall notify the Interrogator that the kill operation was successful, and shall
not respond to an Interrogator thereafter. Killed Tags shall remain in the killed state under all
circumstances, and shall immediately enter killed upon subsequent power-ups. Killing a Tag is
irreversible.
Slot counter
Tags shall implement a 15-bit slot counter. Upon receiving a Query or QueryAdjust command a
Tag shall preload into its slot counter a value between 0 and 2 Q
–1, drawn from the Tag’s RNG. Q
is an integer in the range (0, 15). A Query specifies Q; a QueryAdjust may modify Q from the
prior Query.
Tags in the arbitrate state decrement their slot counter every time they receive a QueryRep with
matching session, transitioning to the reply state and backscattering an RN16 when their slot
counter reaches 0000h. Tags whose slot counter reached 0000h, who replied, and who were not
acknowledged (including Tags that responded to an original Query and were not acknowledged)
shall return to arbitrate with a slot value of 0000h and shall decrement this slot value from 0000h
to 7FFFh at the next QueryRep. The slot counter shall be capable of continuous counting; meaning
that, after the slot counter rolls over to 7FFFh it begins counting down again, thereby effectively
preventing subsequent replies until the Tag loads a new random value into its slot counter.
Managing Tag populations
Interrogators manage Tag populations using the three basic operations. Each of these operations
comprises one or more commands. The operations are defined as follows:
a) Select:
The process by which an Interrogator selects a Tag population for inventory and access.
Interrogators may use one or more Select commands to select a particular Tag population prior
to inventory.
b) Inventory:
The process by which an Interrogator identifies Tags. An Interrogator begins an inventory
round by transmitting a Query command in one of four sessions. One or more Tags may reply.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 66
The Interrogator detects a single Tag reply and requests the PC word, optional XPC word or
words, EPC, and CRC-16 from the Tag. An inventory round operates in one and only one
session at a time.
c) Access:
The process by which an Interrogator transacts with (reads from or writes to) individual Tags.
An individual Tag must be uniquely identified prior to access. Access comprises multiple
commands, some of which employ one-time-pad based cover-coding of the R=>T link.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 67
APPENDIX – IV
RFID terminology
Antenna: This is the conductive element that enables the tag to send and receive data.
Back scatter: This is a method of communicating between tags and readers. Tags reflect back a
portion of the radio waves that are received from the readers.
Bar code: This is a standard method of identifying the manufacturer and product category of a
particular item. Bar code scanners have to have line of sight to be able to read them.
Closed loop systems: This refers to RFID tracking systems within a company. Open standards
can be by-passed in these RFID tags as they are supposed to be within the company’s territory.
Die: RFID microchips use the silicon block on which circuits have been etched. These silicon
blocks are called die.
Error correcting protocol: This protocol refers to the set of rules by which two items interact and
understand each other.
GTAG: This is a standardisation initiative of the UCC and the EAN for asset tracking and
logistics based on radio frequency identification.
Modulation: This refers to changing the frequency or amplitude of a wave to transmit data that is
converted into digital form.
Nano Block: This term, coined by Alien Technology, is used to describe the tiny microchips,
which are about the width of three human hairs.
Physical Markup Language (PML): This is a language for describing products in a way that a
computer can understand.
RFID reader: The reader communicates with the RFID tag via radio waves and passes the
information in digital form to a computer system for processing thereby by-passing human
intervention.
RFID tag: This is a microchip attached to an antenna for picking up signals and sending signals
back to the RFID reader. It contains a globally unique serial number known as EPC (Electronic
Product Code).
Silent Commerce: This covers all business solutions enabled by tagging, tracking, sensing and
other technologies, including RFID, which make everyday objects intelligent and interactive. It
can be combined with continuous and pervasive Internet connectivity, so making a new
infrastructure where companies can collect data and deliver services without human interaction.
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 68
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 69
ANNEXURE - I
PILOT PROJECT STATUS SHEET OF RFID
STATUS AS ON 01.01.09
NAME OF PROJECT - RADIO FREQUENCY IDENTIFICATION
DEVICE
1 a. Sanction Year of Project 2004- 05
2 b. Initial Sanctioned Amount Rs. 2 Crore
3 Nodal officer in CRIS
coordinating the project GM/IT
4 Nodal officer in FOIS
coordinating the project CPM/FOIS & DY.CPM/FOIS/G
5 Objectives/Features
Provide tools to Manages to:
1.Accurate & automatic identification of wagon
/coaches.
2. Keeping track of wagons & rakes and capture of
online information of wagon no.
3. Optimising turn round time for loading & un-
loading.
6 Scope of work -Location
1000 RFID tags in 500 wagons
Three pilot locations at Talcher, Paradeep &
Vishakapattnam East Coast Railway (ECOR)
7 Software development agency CRIS
8 Current Status of the project 500 wagons are having 1000 RFID tags
9 Next milestone to be achieved
with target date.
Staff Training will be started from 3rd
week of
Nov.08
An Analysis of Effective Wagon Tracking for Indian Railways using RFID Technology 70
ANNEXURE – II
Tag encoding scheme used for tagging IR wagons
Field Entry Bits Required Data bit position in Reader String
From To
1. Equipment
Code 5 1 5
2. Tag Type 2 6 7
3. Railway Code 5 8 12
4. Wagon Number 58 13 67
91 93
5. Side Indicator 1 68 68