introduction to wireless sensor networks by : prof.manoj kavedia shmit-unr-3
TRANSCRIPT
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Introduction ToIntroduction ToWireless Sensor NetworksWireless Sensor Networks
Introduction ToIntroduction ToWireless Sensor NetworksWireless Sensor Networks
By : Prof.Manoj KavediaBy : Prof.Manoj Kavedia
SHMIT-Unr-3SHMIT-Unr-3
www.kavediaSir.Yolasite.Comwww.kavediaSir.Yolasite.Com
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IntroductionIntroduction Wireless Sensor Networks are networks that consists Wireless Sensor Networks are networks that consists
of sensors which are distributed in an ad hoc of sensors which are distributed in an ad hoc manner.manner.
These sensors work with each other to sense some These sensors work with each other to sense some physical phenomenon and then the information physical phenomenon and then the information gathered is processed to get relevant results.gathered is processed to get relevant results.
Wireless sensor networks consists of Wireless sensor networks consists of protocols and protocols and algorithms with self-organizing capabilities.algorithms with self-organizing capabilities.
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Wireless Sensor NetworksWireless Sensor Networks
A wireless sensor network is a collection of A wireless sensor network is a collection of
nodes organized into a cooperative network. nodes organized into a cooperative network.
Each node consists of processing capability Each node consists of processing capability
may contain multiple types of memory have may contain multiple types of memory have
an RF transceiver, have a power source an RF transceiver, have a power source
(e.g., batteries and solar cells), and (e.g., batteries and solar cells), and
accommodate various sensors. accommodate various sensors.
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ExampleExample
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Example- Smart Fluid Level Example- Smart Fluid Level DetectionDetection
Page 5
8-bit processor8-bit processor
Inductive coil for RF Inductive coil for RF ID activation & ID activation &
powerpower
CPU and reading coil in the table. Reports the level of fluid in the glass, alerts servers when close to empty
Contact less Contact less transmission transmission of power and of power and
readingsreadings
Integrates several technologies:- Radio transmissions- Sensor technology- Magnetic inductance for power- Computer used for calibration
Impossible without the computer Meaningless without the
electronics
Capacitive sensor Capacitive sensor for for fluidfluid level level
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Wireless Sensor NetworksWireless Sensor Networks
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LayoutLayout
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Communication NetworkCommunication Network
A communication network is composed of
nodes, each of which has computing power and
can transmit and receive messages over
communication links, wireless or cabled.
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Basic Network TopologiesBasic Network Topologies
Star TopologyStar Topology
Ring TopologyRing Topology
Bus TopologyBus Topology
Tree TopologyTree Topology
Fully Connected NetworksFully Connected Networks
Mesh NetworksMesh Networks
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Star TopologyStar Topology
All nodes of the star topology are connected to a single
hub node. The hub requires greater message handling,
routing, and decision-making capabilities than the other
nodes. If a communication link is cut, it only affects one
node. However, if the hub is incapacitated the network
is destroyed.
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Ring TopologyRing Topology
In the ring topology all nodes perform the
same function and there is no leader node.
Messages generally travel around the ring in
a single direction.
However, if the ring is cut, all
communication is lost.
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Bus TopologyBus Topology
In the bus topology, messages are broadcast
on the bus to all nodes. Each node checks
the destination address in the message
header, and processes the messages
addressed to it.
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Tree TopologyTree Topology
In Tree Topology there will be a root node In Tree Topology there will be a root node
and the root node has two branches. Each and the root node has two branches. Each
branch may again contains branches and so branch may again contains branches and so
on.on.
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Fully-connected NetworkFully-connected Network
In a fully connected Network when
additional nodes are added, the number of
links increases exponentially.
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Mesh NetworkMesh Network
Mesh networks are regularly distributed
networks that generally allow transmission
only to a node’s nearest neighbors. The
nodes in these networks are generally
identical.
Mesh nets can be good models for
large-scale networks of wireless
sensors that are distributed over a
geographic region.
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Communication NetworkCommunication Network
A single network may consist of several
interconnected subnets of different
topologies. Networks are further classified as
Local Area Networks (LAN), e.g. inside one
building, or Wide Area Networks (WAN), e.g.
between buildings.
continue …
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Wireless Sensor NetworksWireless Sensor Networks
A A wireless sensor networkwireless sensor network (WSN) is a (WSN) is a
wireless network consisting of spatially wireless network consisting of spatially
distributed autonomous devices using distributed autonomous devices using
sensors to cooperatively monitor physical or sensors to cooperatively monitor physical or
environmental conditions, such as environmental conditions, such as
temperature, sound, vibration, pressure, temperature, sound, vibration, pressure,
motion or pollutants, at different locations.motion or pollutants, at different locations.
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Wireless Sensor NetworksWireless Sensor NetworksThe development of wireless sensor The development of wireless sensor
networks was originally motivated by networks was originally motivated by
military applications such as battlefield military applications such as battlefield
surveillance. However, wireless sensor surveillance. However, wireless sensor
networks are now used in many civilian networks are now used in many civilian
application areas, including environment application areas, including environment
and habitat monitoring, healthcare and habitat monitoring, healthcare
applications, home automation, and traffic applications, home automation, and traffic
control.control.
continue …
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Sensor NodeSensor Node
Networks of typically small, battery-powered, Networks of typically small, battery-powered, wireless devices.wireless devices.• On-board processing,On-board processing,• Communication, and Communication, and • Sensing capabilities.Sensing capabilities.
Sensors
Processor
Radio
Storage
POWER
WSN device schematics
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Sensor NodeSensor NodeIn addition to one or more sensors, each In addition to one or more sensors, each
node in a sensor network is typically node in a sensor network is typically
equipped with a radio transceiver or other equipped with a radio transceiver or other
wireless communications device, a small wireless communications device, a small
microcontroller, and an energy source, microcontroller, and an energy source,
usually a battery.usually a battery.
continue …
Sensors
Processor
Radio
Storage
POWER
WSN device schematics
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What are motes?What are motes?
MotesMotes mainly consist of three parts:- mainly consist of three parts:- Mote basically consists of a low cost Mote basically consists of a low cost
and power computer.and power computer. The computer monitors one or more The computer monitors one or more
sensors. Sensors may be for sensors. Sensors may be for temperature, light, sound, position, temperature, light, sound, position, acceleration, vibration, stress, weight, acceleration, vibration, stress, weight, pressure, humidity, etc. pressure, humidity, etc.
The computer connects to the outside The computer connects to the outside world with a radio link. world with a radio link.
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Mica 2 MotesMica 2 Motes
These motes sold by Crossbow These motes sold by Crossbow were originally developed at the were originally developed at the University of California Berkeley. University of California Berkeley.
The MICA2 motes are based on The MICA2 motes are based on the ATmega128L AVR the ATmega128L AVR microprocessor. The motes run microprocessor. The motes run using TinyOS as the operating using TinyOS as the operating system.system.
Mica2 mote is one of the most Mica2 mote is one of the most popular and commercially popular and commercially available sensors which are available sensors which are marketed by CrossBow marketed by CrossBow technologies.technologies.
MICA 2 MOTE
Ref:http://www.xbow.com/Products/Product_pdf_files/Wireless_pdf/MICA2_Datasheet.pdf
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Telosb MotesTelosb Motes
Telosb motes have USB programming Telosb motes have USB programming capabilitycapability
An IEEE 802.15.4 compliant, high data An IEEE 802.15.4 compliant, high data rate radio with integrated antenna, a rate radio with integrated antenna, a low-power MCU low-power MCU
There are also equipped with extended There are also equipped with extended memory and an optional sensor suitememory and an optional sensor suite
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What are motes?What are motes?
MotesMotes mainly consist of three parts:- mainly consist of three parts:- Mote basically consists of a low cost Mote basically consists of a low cost
and power computer.and power computer. The computer monitors one or more The computer monitors one or more
sensors. Sensors may be for sensors. Sensors may be for temperature, light, sound, position, temperature, light, sound, position, acceleration, vibration, stress, weight, acceleration, vibration, stress, weight, pressure, humidity, etc. pressure, humidity, etc.
The computer connects to the outside The computer connects to the outside world with a radio link. world with a radio link.
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Mica 2 MotesMica 2 Motes
These motes sold by Crossbow These motes sold by Crossbow were originally developed at the were originally developed at the University of California Berkeley. University of California Berkeley.
The MICA2 motes are based on The MICA2 motes are based on the ATmega128L AVR the ATmega128L AVR microprocessor. The motes run microprocessor. The motes run using TinyOS as the operating using TinyOS as the operating system.system.
Mica2 mote is one of the most Mica2 mote is one of the most popular and commercially popular and commercially available sensors which are available sensors which are marketed by CrossBow marketed by CrossBow technologies.technologies.
MICA 2 MOTE
Ref:http://www.xbow.com/Products/Product_pdf_files/Wireless_pdf/MICA2_Datasheet.pdf
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Telosb MotesTelosb Motes
Telosb motes have USB programming Telosb motes have USB programming capabilitycapability
An IEEE 802.15.4 compliant, high data An IEEE 802.15.4 compliant, high data rate radio with integrated antenna, a rate radio with integrated antenna, a low-power MCU low-power MCU
There are also equipped with extended There are also equipped with extended memory and an optional sensor suitememory and an optional sensor suite
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TELOSB MOTETELOSB MOTE
Introduction to Wireless Sensor Networks27
Ref:http://www.eecs.berkeley.edu/~culler/eecs194/labs/lab1/telosb.JPG
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One Example Sensor Board - MTS310One Example Sensor Board - MTS310
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One More Example of Sensor One More Example of Sensor Board - Board - MTS400/420MTS400/420
Besides the functions of MTS 300, it mainly Besides the functions of MTS 300, it mainly adds GPS functionalityadds GPS functionality
Further Readinghttp://firebug.sourceforge.net/gps_tests.htm
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Hardware Setup OverviewHardware Setup Overview
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Programming Board (MIB520Programming Board (MIB520))
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One Proposed WSN Functional Layer One Proposed WSN Functional Layer DecompositionDecomposition
Ref: Fig. 1.1 of J. Polastre Dissertation
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Architecture to Build WSNArchitecture to Build WSN Applications Applications
Ref: Fig. 2.1 of J. Polastre DissertationRef: Fig. 2.1 of J. Polastre Dissertation33 Introduction to Wireless Sensor Networks
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Sensor NodeSensor Nodecontinue …
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Sensor NodeSensor Nodecontinue …
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Sensor NetworkSensor NetworkInterface
electronics, radio and microcontroller
Soil moisture probe Mote
Antenna
Gateway
Server
Internet
Communications barrier
Sensor field
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Computer RevolutionComputer Revolution
0.5 oz, 2.25 x 1.25 x 0.25 inch0.5 oz, 2.25 x 1.25 x 0.25 inch25 lb, 19.5 x 5.5 x 16 inch25 lb, 19.5 x 5.5 x 16 inch
~14 mW~14 mW~ 64 W~ 64 W
~ $35~ $35~ $6K (today)~ $6K (today)
512 KB Flash512 KB Flash160 KB Floppies160 KB Floppies
128 KB RAM128 KB RAM16-256 KB RAM16-256 KB RAM
4 MHz4 MHz4.77 MHz4.77 MHz
MICAZ Mote (2005)MICAZ Mote (2005)Original IBM PC (1981)Original IBM PC (1981)
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Sensor NetworkSensor Network
Gateway
Server
Internet
Sensor fieldWatershed
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Network Model for WSNNetwork Model for WSN
A wireless sensor network consists of A wireless sensor network consists of
hundreds or thousands of low cost nodes hundreds or thousands of low cost nodes
which could either have a fixed location or which could either have a fixed location or
randomly deployed to monitor the randomly deployed to monitor the
environment. The flowing of data ends at environment. The flowing of data ends at
special nodes called base stations special nodes called base stations
(sometimes they are also referred to as (sometimes they are also referred to as
sinks). sinks).
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Network Model for WSNNetwork Model for WSN
A base station links the sensor network to A base station links the sensor network to
another network (like a gateway) to another network (like a gateway) to
disseminate the data sensed for further disseminate the data sensed for further
processing. Base stations have enhanced processing. Base stations have enhanced
capabilities over simple sensor nodes since capabilities over simple sensor nodes since
they must do complex data processing.they must do complex data processing.
continue …
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Network Model for WSNNetwork Model for WSN
This justifies the fact that bases stations This justifies the fact that bases stations
have workstation/laptop class processors, have workstation/laptop class processors,
and of course enough memory, energy, and of course enough memory, energy,
storage and computational power to perform storage and computational power to perform
their tasks well. their tasks well.
continue …
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Future of WSNFuture of WSNSmart Home / Smart OfficeSmart Home / Smart Office
Sensors controlling Sensors controlling appliances and electrical appliances and electrical devices in the house.devices in the house.
Better lighting and Better lighting and heating in office heating in office buildings.buildings.
The Pentagon building The Pentagon building has used sensors has used sensors extensivelyextensively..
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Biomedical / MedicalBiomedical / Medical Health MonitorsHealth Monitors
• GlucoseGlucose• Heart rateHeart rate• Cancer detectionCancer detection
Chronic DiseasesChronic Diseases• Artificial retinaArtificial retina• Cochlear implantsCochlear implants
Hospital SensorsHospital Sensors• Monitor vital signsMonitor vital signs• Record anomaliesRecord anomalies
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MilitaryMilitary
Remote deployment of Remote deployment of sensors for tactical sensors for tactical
monitoring of enemy monitoring of enemy troop movementstroop movements.
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Industrial & CommercialIndustrial & Commercial
Numerous industrial and commercial Numerous industrial and commercial applications:applications:• Agricultural Crop ConditionsAgricultural Crop Conditions• Inventory TrackingInventory Tracking• In-Process Parts TrackingIn-Process Parts Tracking• Automated Problem ReportingAutomated Problem Reporting• RFID – Theft Deterrent and Customer TracingRFID – Theft Deterrent and Customer Tracing• Plant Equipment Maintenance MonitoringPlant Equipment Maintenance Monitoring
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Traffic Management & MonitoringTraffic Management & Monitoring
Future cars could use wireless sensors to: Handle Accidents Handle Thefts
Sensors embedded in the roads to:
–Monitor traffic flows–Provide real-time route updates46 Introduction to Wireless Sensor Networks
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Usage of Sensor NetworksUsage of Sensor Networks Environmental Observation:Environmental Observation:
Sensor networks can be used to monitor Sensor networks can be used to monitor
environmental changes. An example could be water environmental changes. An example could be water
pollution detection in a lake that is located near a pollution detection in a lake that is located near a
factory that uses chemical substances. Sensor nodes factory that uses chemical substances. Sensor nodes
could be randomly deployed in unknown and hostile could be randomly deployed in unknown and hostile
areas and relay the exact origin of a pollutant. Other areas and relay the exact origin of a pollutant. Other
examples include forest fire detection, air pollution examples include forest fire detection, air pollution
and rainfall observation in agriculture. and rainfall observation in agriculture.
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Usage of Sensor NetworksUsage of Sensor Networks Military Monitoring:Military Monitoring:
Military uses sensor networks for battlefield Military uses sensor networks for battlefield
surveillance; sensors could monitor surveillance; sensors could monitor
vehicular traffic, track the position of the vehicular traffic, track the position of the
enemy.enemy.
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Usage of Sensor NetworksUsage of Sensor Networks Building Monitoring:Building Monitoring:
Sensors can also be used in large buildings Sensors can also be used in large buildings
or factories monitoring climate changes. or factories monitoring climate changes.
Thermostats and temperature sensor nodes Thermostats and temperature sensor nodes
are deployed all over the building’s area. In are deployed all over the building’s area. In
addition, sensors could be used to monitor addition, sensors could be used to monitor
vibration that could damage the structure of vibration that could damage the structure of
a building.a building.
continue …
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Usage of Sensor NetworksUsage of Sensor NetworksHealthcare:Healthcare:
Sensors can be used in biomedical Sensors can be used in biomedical
applications to improve the quality of the applications to improve the quality of the
provided care. Sensors are implanted in the provided care. Sensors are implanted in the
human body to monitor medical problems human body to monitor medical problems
like cancer and help patients maintain their like cancer and help patients maintain their
health. health.
continue …
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Usage of Sensor Networks-Usage of Sensor Networks-Health CareHealth Care
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Why WSN-The PresentWhy WSN-The Present....• Disappearing computer,Disappearing computer,
• Ubiquitous computing,Ubiquitous computing,
• Pervasive computing,Pervasive computing,
• Ambient intelligence,Ambient intelligence,
• Post-PC era,Post-PC era,
• Cyber-physical systemsCyber-physical systems..
According to forecasts, future of IT characterized by terms such as
Basic Technology– Embedded Systems
– Communication technologies
The future is embedded, embedded is the future
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Embedded System..Embedded System.. Embedded systemEmbedded system: computing systems designed for a : computing systems designed for a specificspecific
purpose.purpose. Embedded system Embedded system = Processor + Communication device + Memory + = Processor + Communication device + Memory +
I/OI/O Embedded software Embedded software is software integrated with is software integrated with physicalphysical processes processes
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“(CPS-Cy-Phy)”Cyber Physical Systems
are integrations of computation with physical processes.”
[Edward Lee, 2006]
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Cyber Physical SystemCyber Physical System CyberCyber – computation, communication, and control that are discrete, – computation, communication, and control that are discrete,
logical, and switchedlogical, and switched
PhysicalPhysical – natural and human-made systems governed by the laws of – natural and human-made systems governed by the laws of physics and operating in continuous timephysics and operating in continuous time
Cyber-Physical SystemsCyber-Physical Systems – systems in which the cyber and physical – systems in which the cyber and physical systems are tightly integrated at all scales and levelssystems are tightly integrated at all scales and levels
Cyber-physical systems (CPSs) are Cyber-physical systems (CPSs) are physicalphysical and and engineeredengineered systemssystems whose operations are whose operations are monitoredmonitored, , coordinatedcoordinated, , controlled controlled and and integratedintegrated by a by a computingcomputing and and communicationcommunication core. core.
““CPS will transform how we interact with the physical world just like the CPS will transform how we interact with the physical world just like the Internet transformed how we interact with one another.Internet transformed how we interact with one another.””
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Why Cyber Physical System ?Why Cyber Physical System ? CPS allow us to add CPS allow us to add capabilities to physical systemscapabilities to physical systems By merging computing and communication with physical By merging computing and communication with physical
processes, CPS brings many benefits:processes, CPS brings many benefits:
• • Safer and more efficient Safer and more efficient systemssystems
• • Reduce the cost of building Reduce the cost of building and operating systemsand operating systems
• • Build complex systems that provide Build complex systems that provide new capabilitiesnew capabilities Technological and Economic DriversTechnological and Economic Drivers
• • The The decreasing cost decreasing cost of computation, networking, and sensingof computation, networking, and sensing
• • Computers and communication are ubiquitous, enables national Computers and communication are ubiquitous, enables national or or global scale CPSsglobal scale CPSs
• • Social and economic forces require more efficient use of nationalSocial and economic forces require more efficient use of national
infrastructure.infrastructure.
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VoiceVoice
Yesterday- 15 years agoYesterday- 15 years agoMillions ofMillions of wireless devices
SMSSMS
TodayTodayBillions ofBillions of wireless devices
EmailEmail
Mobile TVMobile TV
You You TTubeube
Wireless InternetWireless Internet
WiFiWiFi
Social NetworkingSocial Networking
Wireless EverywhereWireless Everywhere
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Tomorrow +15 years Tomorrow +15 years TrillionsTrillions of Wireless devices of Wireless devices
People to PeoplePeople to People People to machinesPeople to machines Machines to MachinesMachines to Machines
Cyber Physical SystemsCyber Physical Systems
EnvironmentEnvironment
Health CareHealth CareNew DevicesNew Devices
Internet of ThingsInternet of Things
EnergyEnergy
Wireless EverywhereWireless Everywhere
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CPS-Distributed Architecture in CPS-Distributed Architecture in IndiaIndia
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GARUDA-Global Access to Resource Using Distributed Architecture
GARUDA is •India's first grid (Distributed) computing initiative, •Developed and deployed by C-DAC •with the financial support of Govt. Of India.
It is an aggregation of resources comprising of •computational nodes, •mass storage and •scientific instruments distributed across the country.
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GARUDA ApplicationGARUDA Application
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Collaborative Classrooms Climate Modeling Computer Aided Engineering Disaster Management Medical and Health Care Open Source Drug Discovery Open System for Earth Quake Simulation
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COMPUTER AIDED COMPUTER AIDED ENGINEERINGENGINEERING
Courtesy :www.garunda.in
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Drug DiscoveryDrug Discovery OOpen pen SSource ource DDrug rug DDiscovery (OSDD) is a CSIR-led global iscovery (OSDD) is a CSIR-led global
initiative initiative Funded by Funded by Govt of India Govt of India Develop drugs for tropical infectious diseases like malaria, Develop drugs for tropical infectious diseases like malaria,
tuberculosis, leishmaniasis, etc tuberculosis, leishmaniasis, etc The OSDD method tries to collaboratively aggregate the The OSDD method tries to collaboratively aggregate the
biological and genetic information available to scientists for biological and genetic information available to scientists for use to hasten the discovery of drugs use to hasten the discovery of drugs
This will provide a unique opportunity for the entire This will provide a unique opportunity for the entire community of scientists, doctors, technocrats, students and community of scientists, doctors, technocrats, students and others with diverse expertise to contribute/work for a others with diverse expertise to contribute/work for a common cause common cause
Such drug discovery applications have several components Such drug discovery applications have several components requiring huge computation power and data storage requiring huge computation power and data storage
StatisticsStatisticsAn estimated An estimated 3,70,000 3,70,000 deaths due to TB occur each year. This deaths due to TB occur each year. This
amounts to over amounts to over 1000 1000 deaths a day or deaths a day or 22 TB deaths every 3 TB deaths every 3 minutes minutes
Courtesy :www.osdd.net
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OSDDOSDD
OSDD
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OSDDOSDD
Courtesy :www.garunda.in
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Latest – in CPS in India – Space Latest – in CPS in India – Space TechnologyTechnology
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The Mars Orbiter Mission (MOM), informally called Mangalyaan, ("Mars-craft") is a Mars orbiter that was successfully launched into Earth orbit on 5 November 2013 by the Indian Space Research Organisation (ISRO).
The mission is a "technology demonstrator" project aiming to develop the technologies required for design, planning, management and operations of an interplanetary mission.
The Mars Orbiter Mission probe lifted-off from the First Launch Pad at Sriharikota, Andhra Pradesh, using a Polar Satellite Launch Vehicle (PSLV) rocket 5 November 2013.
The launch window was approximately 20 days long and started on 28 October.
The Mars Orbiter Mission is India's first interplanetary mission.
If successful, ISROwould become the fourth space agency to reach Mars, after the Soviet space program, NASA, and ESA(European Space Agency).
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CPS Community ActivitiesCPS Community Activities
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• High Confidence Medical Device Software and Systems (2005) (2007) (2011)• High Confidence Software Platform for Cyber Physical Systems• NSF: Workshop on Cyber Physical Systems• NSF: Automotive CPS (2008) (2011)• ARO: Security and Privacy of Cyber Physical System (2012) (2013)(Feb -2014)• NIST: Cyber Security for Cyber Physical Systems• National Workshop on Research on High-Confidence Transportation• Cyber Physical Systems: Automotive Aviation & Rail• New Research Directions in for Future Cyber Physical Energy Systems• CPS Week (2010,2011,2012,2013)(Future- April 14 - 17, 2014)
NSF (National Science Foundation)
ARO(Association for Research in Otolaryngology)
NIST(National Institute of Standards and Technology)
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Presentation ByPresentation By
Mr. Manoj KavediaMr. Manoj Kavedia
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Thanks for Listening
Any Questions ?