Wsn sarada-univ-02-03-13-final-2
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Transcript of Wsn sarada-univ-02-03-13-final-2
Agenda
Dr. SRN Reddy, Email id:[email protected]
WSN in Education and R&D –Mek
WSN and its types
Smart Phone as a Sensor(s)
Demo –A practical Implementation
Other Implementations
Conclusions
Mobile Education Kit- Mek
Presented By: Mek Team ,IGIT Delhi
Dr. SRN Reddy, Email id:[email protected]
Introduction
Mobile Devices are used for several purpose Calling SMS Entertainment Social Networking Internet
Use of Mobile for learning teaching and R&D is a new experience
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Existing System
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Lack of quality practical technical education.
More focus on the theoretical knowledge
Need Immense training to make the students productive
Lack of practical training on emerging technologies like Mobile
Architecture, RTOS, WSN etc
Leads the problem to the industry for training and more time to
market
5,50,000 engineering graduates passing out every year but
unfortunately only 10% to 25% of them are readily employed by
any Technology firm while it is roughly 15% for back-office jobs.[1]
Stronger coordination between campuses and companies is
needed.[1]
Mobile Education Kit-Mek
Dr. SRN Reddy, Email id:[email protected]
Mobile Education Kit – Mek is a platform which bridges the gap between theory and practices among the student through a set of experiment related to ICT subjects taught in there undergraduate and post-graduate program.
We provide them resources in term of – Ebooks Web-links Blogs, technical papers and Mobile apps
Development Platforms - Linux Nokia OS (S 40 series) Windows Phone
Objectives
VISION To impact quality of technical education by bridging the gap between theory and practice in teaching/learning of various ICT subjects using the ubiquitous mobile devices as the new pedagogical platform.[2]
MISSIONDevelop a practical teaching and learning environment that provides comprehensive set of guides and experiments, catering to the needs of Computer Science, Electronics and Information & Telecommunication technologies, by making use of modern computing platforms and make it freely accessible through : www.mobileeducationkit.net [2]
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Subject Considered
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Experiments for
Mobile Computing
Image Processing
Embedded System
Sensor and Sensor’s Network
Computer Graphics
Database Management System
Experiment Design Template
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Name of Experiment: Exp No:
Background:
Summary:
Target Platform:
Procedure:
Source Code Comment
Screenshots
Observation:
Experiment Design Template - Example
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Sensor & Sensor’s Network
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Done To be Done
Display Accelerometer Proximity
GPS Gyroscope
Compass
Basic Components of a Sensor Node
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Types of Sensor Networks
Based on the location:
Terrestrial WSN
Underground WSN
Underwater WSN
Multi-media WSN
Mobile WSN
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Terrestrial WSNA network consists of hundreds to thousands of sensor nodes deployed on land
Challenges :
Finding the optimal route
Distributing energy consumption
Maintaining network connectivity
Eliminating redundancy
Reduce the amount of data communication
Applications :
Environmental sensing and monitoring
Industrial monitoring
Surface explorationsDr. SRN Reddy Email id:[email protected]
Underground WSN
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A network consists of wireless sensor nodes deployed in caves or mines or underground
Challenges :
Expensive deployment
Maintenance
Equipment cost
Applications :
Agriculture Monitoring
Landscape Management
Underground Structural Monitoring
Underground Environment Monitoring of Soil, Water or Mineral
Military Border Monitoring
Underwater WSN
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Network consists of wireless sensor and vehicles deployed into the ocean environmentChallenges:
Expensive underwater sensors
Hardware failure due to environment effects (e.g., corrosion)
Battery power cannot easily be replaced
Sparse deployment and Limited bandwidth Applications:
Pollution monitoring
Undersea surveillance and exploration
Disaster prevention monitoring
Seismic monitoring
Equipment monitoring
Underwater robotics
Multi-media WSN
A network consists of wireless sensor devices that have the ability to store,
process, and retrieve multi-media data such as video, audio, and images.
Challenges:
In-network processing, filtering, and compressing of multi-media
High energy consumption and bandwidth demand
Deployment based on multi-media equipment coverage
Flexible architecture to support different applications
Must integrate various wireless technologies
QoS provisioning is very difficult due to link capacity and delays
Effective cross-layer design
Applications :
Enhancement to existing WSN applications such as tracking and monitoring.
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Mobile WSN
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A network consists of mobile sensor nodes with ability to moveChallenges:
Navigating and controlling mobile nodes Must self-organized Localization with mobility Minimize energy cost Maintaining network connectivity In-network data processing Data distribution and Mobility management Minimize energy usage in locomotion Maintain adequate sensing coverage
Applications : Environmental and Habitat monitoring Military surveillance and Target tracking Underwater monitoring
Protocol Architecture
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WSN vs MANET
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WSN MANET
Similarity Wireless Network Multi-hop wireless networking
Security Symmetric Key Cryptography Public Key Cryptography
Routing Protocols
Support specialized traffic pattern. Cannot afford to have too many node states and packet overhead
Support any node pairsSome source routing and distance vector protocol incur heavy control traffic
Use of Resource
Tighter resources (power, processor speed, bandwidth)
Not as tight.
Sensors in a Smart Phone
• Compass • Image sensor• Fingerprint sensor• Moisture sensor• Tactile sensor• Temperature sensor• Proximity sensor• Accelerometer sensor• Light sensor
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Need of On device Sensors
•Satisfies the needs of the customers•All the relevant information required for me•More intelligent and has more computational and communication power•More services•Cheaper solutions with integration •More Apps
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Mobile Phone Worked as a Sensor node in Health Monitoring[2]
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Accelerometer
•The accelerometer is a built-in electronic component that measures tilt and motion.
•The Accelerometer sensor detects the force of gravity along with reference to the movement of the phone.
•It can detect the rotation and motion gestures such as swinging or shaking.
•Applications: ―Screen rotation from portrait to landscape or vice-versa.―Enriching the game controls.―Controlling the mobile device music player with gesture:-
Mute an incoming callSilence an alarm or pause the mobile music player simply by turning the device face down.
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Demo on Accelerometer
• Display the motion of device in 3D plane represented by three lines (Red, Blue, Green) along x, y, z axis.– Red color line represents the movement along x-axis.– Green color line represents the movement along y-axis.– Blue color line represents the movement along z-axis.
• Get the values of changing coordinates, in each x, y and z plane based on the Accelerometer.
• Major function-– TimeBetweenUpdates=TimeSpan.FromMilliseconds(20);– CurrentValueChanged+=new
EventHandler<SensorReadingEventArgs<AccelerometerReading>>– Vector 3 acceleration=e.SensorReading.Accleration;– X=acceleration.X.ToString();– Y=acceleration.Y.ToString();– Z=acceleration.Z.ToString();
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Compass (Magnetometer)
• Compass or magnetometer sensor used to determine the angle by which the device is rotated relative to the Earth’s magnetic north pole.
• Use raw magnetometer readings to detect magnetic forces around the device.
• It senses orientation relative to the Earth's magnetic field using the Hall Effect.
• To measure strength, orientation, and direction of magnetic field.
Devices: Nokia N97, Nokia E72, Lumia 800 etcApplications : - Auto rotate your digital maps depending on your physical orientation and helps to the find direction in an easy way.
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Demo on Compass
• Display the Magnetic Heading values in terms of radian.• Red line represents the movement of device along the
Earth’s magnetic field.• Needle is always pointing towards the North direction.• Major Function:
– DispatcherTimer.Interval=TimeSpan.FromMilliseconds(30);– CurrentValueChanged+=new
EventHandler<SensorReadingEventArgs<CompassReading>>– magneticHeading=e.SensorReading.MagneticHeading;– trueHeading=e.SensorReading.TrueHeading;
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Proximity
• A proximity sensor in a mobile phone detects the presence of users’ body and deactivates the display and touch pad of phone when it is brought near the face during a call.
Applications: Save battery power by switching off the display.
• Prevent unintentional touch during call progress.• Proximity Sensor can turn off the screen to avoid accidental
touch of the screen by ear.• Pause the activity in the middle, when mobile is brought near to
the face/ear and resume previous activity when it brought away from the human body.
Devices: Lumia 800Dr. SRN Reddy Email:[email protected]
GPS
• GPS sensor detects the location of smart phone.• Work on the triangulation method. • Connection of 3 satellites is required 2D
fix(longitude, latitude) and 4 satellite for 3D fix(altitude).
• Precision: 20-50m, Maximum precision: 10mApplication:
Locating the own position on the digital map.Finding the way to desired destination.Navigation by following the GPS navigator.
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Demo on GPS
• This demo gives you the latitude, longitude and altitude information in text.
• This experiment shows the actual geo-location of the device.
• Major Function:– GeoCoordinateWatcher geoWatcher=new
GeoCoordinateWatcher;– PositionChanged+=new
EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>>
– Latitude=e.Position.Location.Latitude;– Longitude=e.Position.Location.Longitude;– Altitude=e.Position.Location.Altitude;
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Techtile Sensor
• Tactile sensor is a device that is sensitive to touch, force, and pressure.
• Capacitive touch screen phones use touch switch, one of the kinds of tactile sensors.
• Touch switches detect the presence of finger or hand as well as stylus.
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Temperature Sensor
• Temperature sensor senses the heat level.• It is mainly for the safety of the device
component.• On exceeding the threshold value for the
heating, the sensors automatically warned a user and shutdown the device.
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Image Sensor
• Image sensor converts an optical image into an electric signal.
• Two types of Image Sensor– charge-coupled device (CCD) – metal-oxide-semiconductor active pixel sensor (CMOS APS)
• CMOS APS is mostly used in a mobile phone camera to sense images.
• CCD is very good for digital imaging and is mainly used in professional, medical, and scientific applications, where there is need of high quality image.
Example-Spice Mobiles has launched S-1200 with professional CCD sensor
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Future Sensors
• Biometrics SensorsFingerprint recognitionFace recognitionIris pattern recognitionVoice recognition
Example- Motorola Atrix will be the first phone to come with finger print technology.
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GSM-Bluetooth enabled Remote Monitoring and Control System
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GSM-Bluetooth enabled Remote Monitoring and Control System
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Irrigation system using GSM-Bluetooth
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Implementation of Wireless Sensor Network by using Mobile Device
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HumanSense: Towards context aware
sensing, inference and actuation for
applications in Energy and Healthcare
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Conclusions
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Mek can be used as a tool for WNS
On Device Sensor(s) can be adopted for
Practical implementations
Low cost sensing solutions
HumanSense
References
1. Jennifer Yick, Biswanath Mukherjee, Dipak Ghosal, “Wireless sensor network survey”, Computer Networks 52 (2008) 2292–2330
2. I.F. Akyildiz, W. Su*, Y Sankarasubramaniam, E Cayirci , “Wireless sensor networks: a survey”, Computer Networks 38 (2002) 393–422
3. National Programme on Technology Enhanced (NPTEL) Learning http://nptel.iitm.ac.in/
4. Virtual Labs http://www.vlab.co.in/
5. MIT http://www.mit.edu/6. http://mobiledeviceinsight.com/2011/12/sensors-in-smartphones/
7. http://india-mobilewatch.blogspot.in/2011/06/sensors-components-that-make-phone.htmlDr. SRN Reddy Email:[email protected]
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